CN111611723B - Urban building group conveying pipeline leakage diffusion data generation method, device and medium - Google Patents
Urban building group conveying pipeline leakage diffusion data generation method, device and medium Download PDFInfo
- Publication number
- CN111611723B CN111611723B CN202010506297.4A CN202010506297A CN111611723B CN 111611723 B CN111611723 B CN 111611723B CN 202010506297 A CN202010506297 A CN 202010506297A CN 111611723 B CN111611723 B CN 111611723B
- Authority
- CN
- China
- Prior art keywords
- leakage
- diffusion
- pipeline
- conveying pipeline
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/28—Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/08—Fluids
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/14—Pipes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- Algebra (AREA)
- Computing Systems (AREA)
- Fluid Mechanics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Pipeline Systems (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The application discloses a method and a device for generating leakage diffusion data of urban building group conveying pipelines and a computer-readable storage medium. The method comprises the steps of constructing a three-dimensional diffusion area model based on an urban building layout of a building area where a conveying pipeline with a leakage hole is located, and performing grid division treatment on the three-dimensional diffusion area model; calculating leakage quantity and flow speed information of the leakage according to the pressure in the conveying pipeline, the pipeline position where the liquid level of the leakage is located and the density of the leakage; according to the received parameter setting instruction, setting calculation parameters of a leakage diffusion multiphase flow three-dimensional model, and automatically generating leakage diffusion data of a leakage object in a building diffusion area based on the three-dimensional diffusion area model, leakage quantity and flow speed information by utilizing the leakage diffusion multiphase flow three-dimensional model, so that accurate analysis is realized and diffusion migration data of leakage oil pollutants of a conveying pipeline in a dense area of a city building on the city ground surface or the building surface are obtained.
Description
Technical Field
The present disclosure relates to the field of fluid transportation technology, and in particular, to a method and an apparatus for generating leakage and diffusion data of a transportation pipeline of an urban building group, and a computer readable storage medium.
Background
The pipeline transportation has the unique advantages of low one-time investment, low transportation cost, high safety, environmental protection and the like, and is particularly suitable for long-distance transportation of flammable and explosive petroleum and natural gas. The finished oil pipeline is used as a ring of the oil product conveying pipeline close to the consumption terminal, and plays a role of urban blood vessels in the urban pipe network structure. The petroleum and petroleum products have potential risks in the storage and transportation process, once the petroleum products leak in a large area, the petroleum products can flow away rapidly, and if the petroleum products cannot be effectively treated in a short time, huge life and property safety loss can be caused. It can be seen that the safety of the finished oil pipeline is related to the life and property safety of urban residents.
If the research of the initial leakage process of the ground pipeline can be better carried out, the fire-fighting work can be carried out more timely and reasonably, the range of crude oil flowing out can be controlled, the frequency of accidents and the property loss degree can be reduced, the safety of crude oil leakage can be kept within an acceptable risk range, and the method has important significance for preventing and controlling the accidents.
Various researches are carried out on the mechanism of leakage and diffusion of pipelines by domestic and foreign personnel. In this research field, the pipe leakage diffusion can be classified into gas leakage diffusion and liquid leakage diffusion according to leakage medium. The leakage environment can be classified into overhead pipeline leakage and buried pipeline leakage. Theoretical modeling analysis of leakage diffusion, such as gaussian model, sutton model, BM model, etc., of gas is performed theoretically by a learner. Many scholars perform numerical simulation analysis to obtain leakage diffusion data aiming at different application scenes, such as oil reservoirs, seafloors and mountains.
However, the above-described existing methods for leakage diffusion of a buried pipeline or local leakage diffusion of a pipeline have difficulty in accurately describing the diffusion migration process of crude oil on the surface of a building area or on a building surface.
In view of this, how to accurately analyze and obtain the diffusion and migration data of the leaked oil pollutants of the conveying pipeline in the dense area of the urban building on the urban ground surface or the surface of the building is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The application provides a method and a device for generating leakage diffusion data of a conveying pipeline of an urban building group and a computer readable storage medium, which realize accurate analysis and obtain diffusion migration data of oil pollutants leaked from the conveying pipeline in a dense area of an urban building on the surface of the urban earth or the surface of the building.
In order to solve the technical problems, the embodiment of the invention provides the following technical scheme:
in one aspect, the embodiment of the invention provides a method for generating leakage diffusion data of a conveying pipeline of an urban building group, which comprises the following steps:
constructing a three-dimensional diffusion area model based on an urban building layout of a building area where a conveying pipeline with a leakage hole is located, and performing grid division treatment on the three-dimensional diffusion area model;
calculating leakage quantity and flow speed information of the leakage according to the pressure in the conveying pipeline, the pipeline position of the liquid level of the leakage and the density of the leakage;
according to the received parameter setting instruction, automatically filling calculation parameters of a leakage diffusion multiphase flow three-dimensional model, so that the leakage diffusion multiphase flow three-dimensional model automatically generates leakage diffusion data of the leakage object in a construction diffusion area based on the three-dimensional diffusion area model, the leakage quantity and the flow speed information;
wherein the computational parameters include solver type, operating environment configuration information, physical properties of the two-phase material, turbulence model, computational method, initial conditions, and boundary conditions.
Optionally, the calculating the leakage amount and the flow speed information of the leakage according to the pressure in the conveying pipeline, the pipeline position where the liquid level of the leakage is located and the density of the leakage includes:
calculating leakage quantity and flow speed information of the leakage by utilizing a pre-constructed pipeline leakage parameter calculation relation; the pipeline leakage parameter calculation relation comprises a leakage quantity calculation relation and a fluid speed calculation relation;
the leakage amount calculation relation is that
The fluid velocity calculation relationship is
Wherein Q is the leakage amount, u is the flow velocity information, P g The unit is Pa for gauge pressure of the conveying pipeline; h is a L The height value of the liquid level relative to the leakage port is expressed as m; c (C) 0 Is the leakage coefficient of the liquid; a is the sectional area of the break of the conveying pipeline, and the unit is m 2 G is gravity acceleration, ρ is the density of the leakage in kg/m 3 。。
Optionally, the calculating parameters of the leakage diffusion multiphase flow three-dimensional model according to the received parameter setting instruction include:
automatically setting a Fluent solver of the leakage diffusion multiphase flow three-dimensional model as a solver based on pressure according to the received parameter setting instruction;
automatically setting the running environment configuration information of the leakage diffusion multiphase flow three-dimensional model to be Z according to the received parameter setting instruction, wherein the gravity acceleration is 9.8m/s < 2 >, and the running environment pressure is one atmosphere;
automatically setting the turbulence model of the leakage diffusion multiphase flow three-dimensional model to be a standard k-epsilon model according to the received parameter setting instruction;
automatically setting the calculation method of the leakage diffusion multiphase flow three-dimensional model to be a PISO algorithm according to the received parameter setting instruction;
automatically setting the initial conditions and boundary conditions of the leakage diffusion multiphase flow three-dimensional model to be that the concentration of an oil phase is 0% before the pipeline is in a non-leakage state according to the received parameter setting instruction; defining the surface and the ground surface of a building as walls, wherein a leakage small hole with the diameter of 200mm is a speed inlet and the size of 5m/s; the 5 surfaces of the surface of the calculation domain except the surface of the earth are all set as pressure outlets, and the gauge pressure is 0.
Optionally, after the calculating parameters of the leakage diffusion multiphase flow three-dimensional model are automatically filled according to the received parameter setting instruction, the method further comprises:
acquiring oil phase cloud pictures of different moments output by the leakage diffusion multiphase flow three-dimensional model;
and defining oil phase cloud pictures at different moments as corresponding time frames to obtain the area range and the leakage speed of the leakage object along with the time.
Optionally, after positioning the oil phase cloud images at different moments into corresponding time frames to obtain the area range and the leakage speed of the leakage object along with time, the method further includes:
the leakage process of the leakage is visually displayed according to the area range and the leakage speed of the leakage along with the time so as to dynamically show the whole process of spraying the leakage from the small hole to the air, then falling to the ground and diffusing on the surface.
Another aspect of the embodiment of the present invention provides a device for generating leakage diffusion data of a conveying pipeline of an urban building group, including:
the diffusion area model construction module is used for constructing a three-dimensional diffusion area model based on an urban building layout diagram of a building area where the conveying pipeline with the leakage holes is located, and carrying out grid division treatment on the three-dimensional diffusion area model;
the leakage information calculation module is used for calculating leakage amount and flow speed information of the leakage according to the pressure in the conveying pipeline, the pipeline position of the liquid level of the leakage and the density of the leakage;
the leakage diffusion data generation module is used for automatically filling calculation parameters of a leakage diffusion multiphase flow three-dimensional model according to the received parameter setting instruction so that the leakage diffusion multiphase flow three-dimensional model automatically generates leakage diffusion data of the leakage object in a building diffusion area based on the three-dimensional diffusion area model, the leakage amount and the flow speed information;
wherein the computational parameters include solver type, operating environment configuration information, physical properties of the two-phase material, turbulence model, computational method, initial conditions, and boundary conditions.
Optionally, the leakage information calculating module is specifically configured to:
calculating leakage quantity and flow speed information of the leakage by utilizing a pre-constructed pipeline leakage parameter calculation relation; the pipeline leakage parameter calculation relation comprises a leakage quantity calculation relation and a fluid speed calculation relation;
the leakage amount calculation relation is that
The fluid velocity calculation relationship is
Wherein Q is the leakage amount, u is the flow velocity information, P g The unit is Pa for gauge pressure of the conveying pipeline; h is a L The height value of the liquid level relative to the leakage port is expressed as m; c (C) 0 Is the leakage coefficient of the liquid; a is the sectional area of the break of the conveying pipeline, and the unit is m 2 G is gravity acceleration, ρ is the density of the leakage in kg/m 3 。
Optionally, the method further comprises:
and the leakage detail data calculation module is used for defining oil phase cloud pictures at different moments acquired from the leakage diffusion multiphase flow three-dimensional model as corresponding time frames so as to obtain the area range and the leakage speed of the leakage object along with time.
The embodiment of the invention also provides a device for generating the leakage diffusion data of the urban building group conveying pipeline, which comprises a processor, wherein the processor is used for realizing the steps of the method for generating the leakage diffusion data of the urban building group conveying pipeline when executing the computer program stored in the memory.
The embodiment of the invention finally provides a computer readable storage medium, wherein the computer readable storage medium stores a city building group conveying pipeline leakage diffusion data generating program, and the city building group conveying pipeline leakage diffusion data generating program realizes the steps of the city building group conveying pipeline leakage diffusion data generating method when being executed by a processor.
The technical scheme provided by the application has the advantages that the leakage diffusion data of the leakage object in the construction diffusion area are automatically generated through the established three-dimensional model of the construction area leakage diffusion multiphase flow for simulating the diffusion and migration of the leakage object in the urban surface or the construction surface based on the finite volume method and in combination with computational fluid analysis software, so that the problem that the diffusion and migration process of the conveying liquid on the ground surface or the construction surface of the construction area cannot be accurately described aiming at the leakage diffusion of the buried pipeline or the local leakage diffusion of the pipeline in the related technology is solved, and the accurate analysis and the diffusion and migration data of the leakage object in the conveying pipeline in the urban surface or the construction surface of the urban building dense area are realized.
In addition, the embodiment of the invention also provides a corresponding implementation device and a computer-readable storage medium for the urban building group conveying pipeline leakage diffusion data generation method, so that the method has more practicability, and the device and the computer-readable storage medium have corresponding advantages.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the related art, the drawings that are required to be used in the embodiments or the description of the related art will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to those of ordinary skill in the art.
Fig. 1 is a schematic flow chart of a method for generating leakage diffusion data of a conveying pipeline of an urban building group according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a three-dimensional building area model of an exemplary application scenario provided by an embodiment of the present invention in southeast view;
FIG. 3 is a schematic view of computational domain meshing of the exemplary application scenario of FIG. 2 provided by an embodiment of the present invention;
fig. 4 is a schematic flow chart of another method for generating leakage diffusion data of a city building group conveying pipeline according to an embodiment of the present invention;
FIG. 5 is a schematic view of a leak diffusion range visualization for a leak rate of 5m/s provided by an embodiment of the present invention;
FIG. 6 is a schematic view of a leakage diffusion range visualization at a leakage rate of 20m/s according to an embodiment of the present invention;
FIG. 7 is a block diagram of a specific implementation of a device for generating leakage diffusion data of urban building group transportation pipelines according to an embodiment of the present invention;
FIG. 8 is a block diagram of another embodiment of a device for generating leakage diffusion data of a city building group conveying pipeline according to an embodiment of the present invention;
fig. 9 is a block diagram of still another embodiment of the apparatus for generating leakage diffusion data of a city building group conveying pipeline according to the embodiment of the present invention.
Detailed Description
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of this application and in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may include other steps or elements not expressly listed.
Having described the technical solutions of embodiments of the present invention, various non-limiting implementations of the present application are described in detail below.
Referring first to fig. 1, fig. 1 is a flow chart of a method for generating leakage diffusion data of a conveying pipeline of an urban building group according to an embodiment of the present invention, where the embodiment of the present invention may include the following contents:
s101: and constructing a three-dimensional diffusion area model based on the urban building layout of the building area where the conveying pipeline with the leakage holes is located, and performing grid division treatment on the three-dimensional diffusion area model.
The method is suitable for the problem of leakage of fluid such as crude oil in a conveying pipeline in a dense urban building area, the earth surface condition is cement concrete, and meanwhile, the diffusion behavior of the oil product on the earth surface can be considered to be only caused by the earth surface flowing due to the difference of the topography condition of the earth surface by neglecting the volatilization influence. In order to calculate and obtain the diffusion data of the conveying pipeline in the building area, a three-dimensional model of the building area where the conveying pipeline with the leakage opening is located needs to be constructed, before the three-dimensional model is constructed, a city building layout diagram can be obtained, building parameters of the building area are obtained from the city building layout diagram, then a target diffusion area is determined in the building area based on the diffusion duration, and the longer the diffusion duration is, the larger the corresponding range of the target diffusion area which is diffused around the leakage opening is. After the target diffusion area is determined, building parameters of the target diffusion area are obtained, and a three-dimensional diffusion area model is carried out by adopting any three-dimensional modeling software such as Solideworks or algorithm. As shown in fig. 2, a three-dimensional diffusion area model of a west low east high building layout formed by three buildings is constructed, building parameters are the height of a single building and the distance value between adjacent buildings, according to the design specification of oil pipeline engineering of GB50253-2014, the distances between crude oil and finished oil pipelines and important public buildings of urban residents should not be less than 5m, so the distance between a leakage point and the buildings on two sides should be greater than 10m, and 10m can be selected as shown in fig. 2. In the stage of leakage formation, the area of a leakage port is increased continuously due to internal and external pressure; in the stable leakage stage, the leakage area is unchanged, and the leakage flow tends to be stable; after the emergency response time is reached, the valve is closed to stop pumping so that the pressure is reduced and the leakage is continuously attenuated. The present application assumes that the leak is stable regardless of the stage of leak formation. The leakage diffusion behavior at constant speed is calculated first, and the leakage attenuation is considered later.
Because the general building area does not contain complex curved surface shapes, the three-dimensional diffusion area model can be subjected to grid division by adopting a structured grid, each grid unit is obtained, and the corresponding calculation domain is determined. The meshing may be performed, for example, using Ansys ICEM software, as shown in FIG. 3. The grid generation step includes dividing blocks, mapping the blocks and entity elements, and determining the number of nodes, and the skilled person determines the number of computing nodes based on the size of the target diffusion area, which is not limited in this application. The principle and implementation process of grid division can refer to the process described in the related art, and will not be described herein.
S102: and calculating leakage quantity and flow speed information of the leakage according to the pressure in the conveying pipeline, the pipeline position where the liquid level of the leakage is positioned and the density of the leakage.
It will be appreciated that leakage, such as crude oil, diffuses into an unstable process, and that the diffusion motion of leakage, such as crude oil, in the calculation region satisfies three conservation laws, namely conservation of mass, conservation of momentum, and conservation of energy. Accordingly, the leakage amount and flow velocity information of the leakage can be calculated by establishing a corresponding continuity equation, momentum equation and energy equation.
Wherein, the continuity equation corresponding to the leakage diffusion motion process can be expressed as:
wherein u is x 、u y 、u z Velocity components in x, y, z directions, m/s, respectively; u is a velocity vector, m/s; t is time, s; ρ is density, kg/m 3 。
The differential expressions of the momentum conservation equation corresponding to the diffusion motion process of the leakage object on x, y and z are respectively as follows:
wherein f x 、f y 、f z Unit mass force in x, y and z directions, m/s 2 The method comprises the steps of carrying out a first treatment on the surface of the τ is the viscous stress, pa; p is the pressure on the fluid primordia, pa.
The energy conservation equation corresponding to the diffusion motion process of the leakage can be expressed as:
wherein E is total energy, J/kg; h is a f Is the enthalpy of component J, J/kg; j (J) j Is the diffusion flux of component j; k (k) eff W/(mK) is the effective heat conductivity. The calculation formula is as follows:
T ref ＝298.15K；
k eff ＝k+k t 。
in the application, the leakage part of the pipeline is taken as a circular small hole with the diameter smaller than one tenth of the pipe diameter as an example, and a section of fluid in the pipeline is taken as a research object, so that the leakage amount of the liquid and a liquid speed equation can be calculated by energy conservation of an opening system. Alternatively, the leakage amount and flow rate information of the leakage can be calculated by using a pre-constructed pipeline leakage parameter calculation relation; the pipeline leakage parameter calculation relation includes a leakage amount calculation relation and a fluid velocity calculation relation.
The leakage amount calculation relation can be expressed as
The fluid velocity calculation relationship may be expressed as
Wherein Q is leakage, u is flow velocity information, P g The gauge pressure of the conveying pipeline is Pa; h is a L The height value of the liquid level relative to the leakage port is expressed as m; c (C) 0 The leakage coefficient of the liquid is 0.6; a is the sectional area of the break of the conveying pipeline, and the unit is m 2 G is gravity acceleration, ρ is the density of the leakage in kg/m 3 。
S103: and automatically filling calculation parameters of the leakage diffusion multiphase flow three-dimensional model according to the received parameter setting instruction, so that the leakage diffusion multiphase flow three-dimensional model automatically generates leakage diffusion data of the leakage object in the building diffusion area based on the three-dimensional diffusion area model, the leakage amount and the flow speed information.
Because the leakage diffusion of crude oil is an unsteady state process, in order to achieve the capture of an oil-gas phase interface, a VOF model can be adopted to carry out numerical solution based on Fluent software, namely, the leakage diffusion multiphase flow three-dimensional model in the step S103 is based on the Fluent software and adopts the VOF model. In order to improve the calculation efficiency and the automation degree of the whole calculation flow, the calculation parameters of the leakage diffusion multiphase flow three-dimensional model can be automatically filled directly according to the received parameter setting instruction, and the calculation parameters can comprise the type of solver, the configuration information of the operation environment, the physical properties of two-phase materials, the turbulence model, the calculation method, the initial conditions and the boundary conditions. The parameter setting instruction contains corresponding information of the calculation parameters, and the calculation parameter information in the parameter setting instruction can be manually input or can be directly input through a usb interface or an nfc and other short-distance data transmission modes, so that the realization of the application is not affected. After the configuration of the calculation parameters of the leakage diffusion multiphase flow three-dimensional model is completed, the leakage diffusion multiphase flow three-dimensional model simulates the diffusion process of the leakage in the target diffusion area, and the simulation result is automatically generated and output as leakage diffusion data.
According to the technical scheme provided by the embodiment of the invention, based on a finite volume method and combined with computational fluid analysis software, the leakage diffusion data of the leakage object in the construction diffusion area is automatically generated through the established three-dimensional model of the leakage diffusion multiphase flow of the construction area in the process of simulating the diffusion and migration of the leakage oil pollutants in the urban surface or the construction surface, so that the problem that the diffusion and migration process of the conveying liquid on the ground surface or the construction surface of the construction area cannot be accurately described aiming at the leakage diffusion of the buried pipeline or the local leakage diffusion of the pipeline in the related art is solved, and the accurate analysis and the diffusion and migration data of the leakage oil pollutants of the conveying pipeline in the urban surface or the construction surface in the dense area of the urban construction are realized.
In the above embodiment, the parameter setting of how to execute the leakage diffusion multiphase flow three-dimensional model is not limited, and in order to obtain more accurate leakage diffusion data, the inventors of the present application have determined a set of effect optimal parameters through a great deal of research, and may include the following:
automatically setting a Fluent solver of the leakage diffusion multiphase flow three-dimensional model as a solver based on pressure according to the received parameter setting instruction;
automatically setting the configuration information of the operating environment of the leakage diffusion multiphase flow three-dimensional model to be Z according to the received parameter setting instruction, wherein the gravity acceleration is 9.8m/s2, and the operating environment pressure is one atmosphere;
automatically setting a turbulence model of the leakage diffusion multiphase flow three-dimensional model as a standard k-epsilon model according to the received parameter setting instruction;
automatically setting a calculation method of the leakage diffusion multiphase flow three-dimensional model as a PISO algorithm according to the received parameter setting instruction;
automatically setting initial conditions and boundary conditions of the leakage diffusion multiphase flow three-dimensional model to be that the concentration of an oil phase is 0% before the pipeline is in a state of not being leaked according to the received parameter setting instruction; defining the surface and the ground surface of a building as walls, wherein a leakage small hole with the diameter of 200mm is a speed inlet and the size of 5m/s; the 5 surfaces of the surface of the calculation domain except the surface of the earth are all set as pressure outlets, and the gauge pressure is 0.
That is, boundary conditions of the leak diffusion multiphase flow three-dimensional model of the present application are velocity inlet and pressure outlet conditions, the inlet velocities are 5m/s and 20m/s, and the outlet pressure is atmospheric pressure based on the calculation results of the leak amount calculation relation and the fluid velocity calculation relation. The volume fraction of the oil phase in the initial state is set to be 0, a PISO method can be adopted to calculate the unsteady state process in calculation, and a standard k-epsilon turbulence model is selected. The time step may be set to 0.005s, 4000 steps are calculated initially, and the flow time is 20s.
The difference in operating pressure within the tube will cause the oil to be injected into the air from the fracture at different leak rates. Since the dispersion of crude oil on the ground is a dynamic process, each time there is a different dispersion state, as an alternative embodiment, referring to fig. 4, the present application may further include the following:
s104: and acquiring oil phase cloud pictures of different moments output by the leakage diffusion multiphase flow three-dimensional model.
S105: oil phase cloud pictures at different moments are defined as corresponding time frames to obtain the area range and the leakage speed of leakage objects along with time.
S106: the leakage process of the leakage is visually displayed according to the area range and the leakage speed of the leakage along with the time so as to dynamically show the whole process of the leakage, namely, the leakage is sprayed from the small holes to the air and then falls to the ground and is spread on the ground surface.
In the embodiment of the invention, for example, phase concentration distribution diagrams at different moments can be processed by Ansys Post, so that the whole process that oil is leaked from small holes and sprayed to air and then falls to the ground and spread on the ground can be dynamically observed, then the leakage range schematic diagram is obtained by performing superposition processing by using other image processing software, and crude oil leakage schematic diagrams shown in fig. 5 and 6 can be obtained by superposing 3 different moments.
Taking crude oil leakage of a conveying pipeline in a building area as shown in fig. 2 as an example, if the leakage position of the pipeline is a circular small hole with the diameter smaller than one tenth of the pipe diameter, after visual display processing of S106, a leakage diffusion overlook dynamic diagram at the leakage speed of 5m/S can be observed, and the crude oil is sprayed to the highest about 1.4S and then falls down, and then is always kept at a certain height for gushing; 2.5s of ground surface starts to generate crude oil, the leakage range is larger and larger, and the liquid pool formed by the oil product before polluting the building is in a complete symmetrical shape, and once the oil pool touches the building, the shape of the liquid pool can be pulled towards a certain direction due to irregular arrangement of the building. When the leakage speed is increased to 20m/s, the whole rule is the same as that of 5m/s, and crude oil with about 2.5s is sprayed to the maximum of 20m and then falls down, and then is periodically gushed; crude oil begins to appear at the 6s surface, and then the leakage range is getting larger and larger.
It should be noted that, in the leakage accident of the dense area of the building, the diffusion radius or diffusion area of the oil is a factor for measuring the diffusion process. Due to the blocking of the building, the diffusion speeds of the leaked oil products in two directions are different, and the influence of different building layouts on the leakage speeds in two directions can be studied by respectively analyzing the leakage speeds in the x direction and the y direction. As can be seen from the above illustrative examples, at the initial time of leakage, the pipeline suddenly loses pressure, and the outlet is in a spray shape; the crude oil rapidly falls downwards under the action of gravity after reaching the highest point, and spreads around by taking the falling point as the center after contacting the ground, so that the spreading range is larger and larger; when the leakage speed is not more than 20m/s, the time for starting the diffusion of the crude oil is about 5s, and the diffusion of the crude oil in different directions can be greatly influenced due to the arrangement of buildings, so that the large-scale environmental pollution is avoided, a small oil blocking device can be arranged in a high-frequency damage area of a pipeline to enable the crude oil to be far away from a crowd-intensive area, and property and organism are prevented from being influenced by the leakage of the crude oil.
It should be noted that, in the present application, the steps may be performed simultaneously or may be performed in a certain preset order as long as the steps conform to the logic order, and fig. 1 and fig. 4 are only schematic, and do not represent only such an execution order.
The embodiment of the invention also provides a corresponding device for generating the leakage diffusion data of the urban building group conveying pipeline, so that the method has more practicability. Wherein the device may be described separately from the functional module and the hardware. The device for generating the leakage diffusion data of the urban building group conveying pipeline provided by the embodiment of the invention is described below, and the device for generating the leakage diffusion data of the urban building group conveying pipeline and the method for generating the leakage diffusion data of the urban building group conveying pipeline described below can be correspondingly referred to each other.
Based on the angle of the functional module, referring to fig. 7, fig. 7 is a block diagram of an apparatus for generating leakage diffusion data of a conveying pipeline of an urban building group according to an embodiment of the present invention, where the apparatus may include:
the diffusion area model construction module 701 is configured to construct a three-dimensional diffusion area model based on an urban building layout of a building area where the delivery pipeline with the leakage holes is located, and perform grid division processing on the three-dimensional diffusion area model.
The leakage information calculating module 702 is configured to calculate leakage amount and flow velocity information of the leakage according to pressure in the conveying pipeline, pipeline position where the liquid surface of the leakage is located, and density of the leakage.
A leakage diffusion data generating module 703, configured to automatically fill in calculation parameters of the leakage diffusion multiphase flow three-dimensional model according to the received parameter setting instruction, so that the leakage diffusion multiphase flow three-dimensional model automatically generates leakage diffusion data of the leakage object in the building diffusion area based on the three-dimensional diffusion area model, the leakage amount and the flow speed information; the calculation parameters include solver type, operating environment configuration information, physical properties of the two-phase material, turbulence model, calculation method, initial conditions, and boundary conditions.
Alternatively, in some implementations of the present embodiment, the leakage information calculation module 702 may be specifically configured to:
calculating leakage amount and flow speed information of leakage by utilizing a pre-constructed pipeline leakage parameter calculation relation; the pipeline leakage parameter calculation relation comprises a leakage quantity calculation relation and a fluid speed calculation relation;
the leak amount calculation relation is that
/>
The fluid velocity calculation relationship is
Wherein Q is leakage, u is flow velocity information, P g The gauge pressure of the conveying pipeline is Pa; h is a L The height value of the liquid level relative to the leakage port is expressed as m; c (C) 0 Is the leakage coefficient of the liquid; a is the sectional area of the break of the conveying pipeline, and the unit is m 2 G is gravity acceleration, ρ is the density of the leakage in kg/m 3 。
Optionally, in other implementations of the present embodiment, referring to fig. 8, the apparatus may further include:
the leakage detail data calculation module 704 is configured to define oil phase cloud maps of different moments acquired from the leakage diffusion multiphase flow three-dimensional model as corresponding time frames, so as to obtain a range of areas and a leakage speed of leakage of the leakage object along with time.
The visual display module 705 is used for visually displaying the leakage process of the leakage according to the area range and the leakage speed of the leakage along with the time so as to dynamically display the whole process of spraying the leakage from the small hole to the air, then falling to the ground and diffusing on the ground surface.
The functions of each functional module of the urban building group conveying pipeline leakage diffusion data generating device according to the embodiment of the present invention may be specifically implemented according to the method in the embodiment of the method, and the specific implementation process may refer to the related description of the embodiment of the method, which is not repeated herein.
From the above, the embodiment of the invention can accurately analyze and obtain the diffusion and migration data of the leaked oil pollutants of the conveying pipeline in the dense area of the urban building on the urban ground surface or the building surface.
The above-mentioned urban building group conveying pipeline leakage diffusion data generating device is described from the perspective of a functional module, and further, the application also provides an urban building group conveying pipeline leakage diffusion data generating device, which is described from the perspective of hardware. Fig. 9 is a block diagram of another urban building group transmission pipeline leakage diffusion data generating device according to an embodiment of the present application. As shown in fig. 9, the apparatus includes a memory 90 for storing a computer program;
a processor 91 for implementing the steps of the urban building group transmission pipeline leakage spread data generating method according to any one of the embodiments described above when executing a computer program.
Processor 91 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 91 may be implemented in at least one hardware form of DSP (Digital Signal Processing ), FPGA (Field-Programmable Gate Array, field programmable gate array), PLA (Programmable Logic Array ). The processor 91 may also include a main processor, which is a processor for processing data in an awake state, also called CPU (Central Processing Unit ); a coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 91 may integrate a GPU (Graphics Processing Unit, image processor) for rendering and drawing of content required to be displayed by the display screen. In some embodiments, the processor 91 may also include an AI (Artificial Intelligence ) processor for processing computing operations related to machine learning.
Memory 90 may include one or more computer-readable storage media, which may be non-transitory. Memory 90 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 90 is at least used for storing a computer program 901, where the computer program, when loaded and executed by the processor 91, can implement the relevant steps of the urban building group transportation pipeline leakage diffusion data generation method disclosed in any of the foregoing embodiments. In addition, the resources stored in the memory 90 may further include an operating system 902, data 903, and the like, where the storage mode may be transient storage or permanent storage. The operating system 902 may include Windows, unix, linux, among others. The data 903 may include, but is not limited to, data corresponding to test results, and the like.
In some embodiments, the urban building group transmission pipeline leakage diffusion data generating device may further comprise a display screen 92, an input-output interface 93, a communication interface 94, a power supply 95 and a communication bus 96, for example, a sensor 97 may further be included.
It will be appreciated by those skilled in the art that the configuration shown in fig. 9 is not limiting of the urban building group transfer piping leakage spread data generating device and may include more or fewer components than illustrated, such as sensor 97.
The functions of each functional module of the urban building group conveying pipeline leakage diffusion data generating device according to the embodiment of the present invention may be specifically implemented according to the method in the embodiment of the method, and the specific implementation process may refer to the related description of the embodiment of the method, which is not repeated herein.
From the above, the embodiment of the invention can accurately analyze and obtain the diffusion and migration data of the leaked oil pollutants of the conveying pipeline in the dense area of the urban building on the urban ground surface or the building surface.
It will be appreciated that if the urban mass transit duct leakage spread data generation method of the above-described embodiment is implemented in the form of a software functional unit and sold or used as a stand-alone product, it may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all of the technical solution contributing to the prior art, or in a software product stored in a storage medium, performing all or part of the steps of the methods of the various embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random-access Memory (Random Access Memory, RAM), an electrically erasable programmable ROM, registers, a hard disk, a removable disk, a CD-ROM, a magnetic disk, or an optical disk, etc. various media capable of storing program codes.
Based on this, the embodiment of the present invention further provides a computer readable storage medium storing a city building group transportation pipeline leakage diffusion data generating program, where the city building group transportation pipeline leakage diffusion data generating program when executed by a processor is the steps of the city building group transportation pipeline leakage diffusion data generating method according to any one of the above embodiments.
The functions of each functional module of the computer readable storage medium according to the embodiments of the present invention may be specifically implemented according to the method in the embodiments of the method, and the specific implementation process may refer to the relevant description of the embodiments of the method, which is not repeated herein.
From the above, the embodiment of the invention can accurately analyze and obtain the diffusion and migration data of the leaked oil pollutants of the conveying pipeline in the dense area of the urban building on the urban ground surface or the building surface.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The method, the device and the computer readable storage medium for generating the leakage diffusion data of the urban building group conveying pipeline provided by the application are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present invention, and such improvements and modifications fall within the scope of the claims of the present application.
Claims (10)
1. The method for generating the leakage diffusion data of the urban building group conveying pipeline is characterized by comprising the following steps of:
constructing a three-dimensional diffusion area model based on an urban building layout of a building area where a conveying pipeline with a leakage hole is located, and performing grid division treatment on the three-dimensional diffusion area model;
calculating leakage quantity and flow speed information of the leakage according to the pressure in the conveying pipeline, the pipeline position of the liquid level of the leakage and the density of the leakage;
according to the received parameter setting instruction, automatically filling calculation parameters of a leakage diffusion multiphase flow three-dimensional model, so that the leakage diffusion multiphase flow three-dimensional model automatically generates leakage diffusion data of the leakage object in a construction diffusion area based on the three-dimensional diffusion area model, the leakage quantity and the flow speed information;
wherein the computational parameters include solver type, operating environment configuration information, physical properties of the two-phase material, turbulence model, computational method, initial conditions, and boundary conditions.
2. The method for generating urban building group transportation pipeline leakage diffusion data according to claim 1, wherein calculating the leakage amount and flow velocity information of the leakage according to the pressure in the transportation pipeline, the pipeline position where the liquid surface of the leakage is located, and the density of the leakage comprises:
calculating leakage quantity and flow speed information of the leakage by utilizing a pre-constructed pipeline leakage parameter calculation relation; the pipeline leakage parameter calculation relation comprises a leakage quantity calculation relation and a fluid speed calculation relation;
the leakage amount calculation relation is that
The fluid velocity calculation relationship is
Wherein Q is the leakage amount, u is the flow velocity information, P g The unit is Pa for gauge pressure of the conveying pipeline; h is a L The height value of the liquid level relative to the leakage port is expressed as m; c (C) 0 Is the leakage coefficient of the liquid; a is the sectional area of the break of the conveying pipeline, and the unit is m 2 G is gravity acceleration, ρ is the density of the leakage in kg/m 3 。
3. The method for generating leakage diffusion data for urban building group transportation pipelines according to claim 2, wherein the calculating parameters of the three-dimensional model of the leakage diffusion multiphase flow automatically filled according to the received parameter setting instruction comprises:
automatically setting a Fluent solver of the leakage diffusion multiphase flow three-dimensional model as a solver based on pressure according to the received parameter setting instruction;
automatically setting the running environment configuration information of the leakage diffusion multiphase flow three-dimensional model to be Z according to the received parameter setting instruction, wherein the gravity acceleration is 9.8m/s < 2 >, and the running environment pressure is one atmosphere;
automatically setting the turbulence model of the leakage diffusion multiphase flow three-dimensional model to be a standard k-epsilon model according to the received parameter setting instruction;
automatically setting the calculation method of the leakage diffusion multiphase flow three-dimensional model to be a PISO algorithm according to the received parameter setting instruction;
automatically setting the initial conditions and boundary conditions of the leakage diffusion multiphase flow three-dimensional model to be that the concentration of an oil phase is 0% before the pipeline is in a non-leakage state according to the received parameter setting instruction; defining the surface and the ground surface of a building as walls, wherein a leakage small hole with the diameter of 200mm is a speed inlet and the size of 5m/s; the 5 surfaces of the surface of the calculation domain except the surface of the earth are all set as pressure outlets, and the gauge pressure is 0.
4. A method for generating leakage diffusion data of a city building group conveying pipeline according to any one of claims 1 to 3, wherein after the calculating parameters of the leakage diffusion multiphase flow three-dimensional model are automatically filled according to the received parameter setting instruction, the method further comprises:
acquiring oil phase cloud pictures of different moments output by the leakage diffusion multiphase flow three-dimensional model;
and defining oil phase cloud pictures at different moments as corresponding time frames to obtain the area range and the leakage speed of the leakage object along with the time.
5. The method for generating leakage diffusion data of urban building group transportation pipeline according to claim 4, wherein after positioning oil phase cloud patterns at different moments into corresponding time frames to obtain a range of areas and a leakage speed of the leakage object along with time, the method further comprises:
the leakage process of the leakage is visually displayed according to the area range and the leakage speed of the leakage along with the time so as to dynamically show the whole process of spraying the leakage from the small hole to the air, then falling to the ground and diffusing on the surface.
6. An urban building group conveying pipeline leakage diffusion data generation device is characterized by comprising:
the diffusion area model construction module is used for constructing a three-dimensional diffusion area model based on an urban building layout diagram of a building area where the conveying pipeline with the leakage holes is located, and carrying out grid division treatment on the three-dimensional diffusion area model;
the leakage information calculation module is used for calculating leakage amount and flow speed information of the leakage according to the pressure in the conveying pipeline, the pipeline position of the liquid level of the leakage and the density of the leakage;
the leakage diffusion data generation module is used for automatically filling calculation parameters of a leakage diffusion multiphase flow three-dimensional model according to the received parameter setting instruction so that the leakage diffusion multiphase flow three-dimensional model automatically generates leakage diffusion data of the leakage object in a building diffusion area based on the three-dimensional diffusion area model, the leakage amount and the flow speed information;
wherein the computational parameters include solver type, operating environment configuration information, physical properties of the two-phase material, turbulence model, computational method, initial conditions, and boundary conditions.
7. The urban building group transmission line leakage spread data generating apparatus according to claim 6, wherein the leakage information calculating module is specifically configured to:
calculating leakage quantity and flow speed information of the leakage by utilizing a pre-constructed pipeline leakage parameter calculation relation; the pipeline leakage parameter calculation relation comprises a leakage quantity calculation relation and a fluid speed calculation relation;
the leakage amount calculation relation is that
The fluid velocity calculation relationship is
Wherein Q is the leakage amount, u is the flow velocity information, P g The unit is Pa for gauge pressure of the conveying pipeline; h is a L The height value of the liquid level relative to the leakage port is expressed as m; c (C) 0 Is the leakage coefficient of the liquid; a is the sectional area of the break of the conveying pipeline, and the unit is m 2 G is gravity acceleration, ρ is the density of the leakage in kg/m 3 。
8. The urban building group transmission line leakage spread data generating apparatus according to claim 6 or 7, further comprising:
and the leakage detail data calculation module is used for defining oil phase cloud pictures at different moments acquired from the leakage diffusion multiphase flow three-dimensional model as corresponding time frames so as to obtain the area range and the leakage speed of the leakage object along with time.
9. A city building group transmission line leakage spread data generating apparatus comprising a processor for implementing the steps of the city building group transmission line leakage spread data generating method according to any one of claims 1 to 5 when executing a computer program stored in a memory.
10. A computer-readable storage medium, wherein a city building group transportation piping leakage diffusion data generation program is stored thereon, which when executed by a processor, implements the steps of the city building group transportation piping leakage diffusion data generation method according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010506297.4A CN111611723B (en) | 2020-06-05 | 2020-06-05 | Urban building group conveying pipeline leakage diffusion data generation method, device and medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010506297.4A CN111611723B (en) | 2020-06-05 | 2020-06-05 | Urban building group conveying pipeline leakage diffusion data generation method, device and medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111611723A CN111611723A (en) | 2020-09-01 |
| CN111611723B true CN111611723B (en) | 2023-05-23 |
Family
ID=72204568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010506297.4A Active CN111611723B (en) | 2020-06-05 | 2020-06-05 | Urban building group conveying pipeline leakage diffusion data generation method, device and medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111611723B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112182988B (en) * | 2020-09-21 | 2022-06-14 | 中国石油大学(华东) | CFD software-based crude oil storage tank leakage oil and gas distribution simulation method |
| CN113191022B (en) * | 2021-05-27 | 2023-11-03 | 中国石油大学(北京) | Method, device and system for identifying drift rule of crude oil on river surface |
| CN113586969B (en) * | 2021-07-22 | 2022-11-25 | 杭州电子科技大学 | Tube burst detection method based on quasi-transient pressure signal |
| CN114239193B (en) * | 2021-10-20 | 2023-02-03 | 北京市燃气集团有限责任公司 | Gas pipeline leakage simulation method and device |
| CN114722549B (en) * | 2022-05-05 | 2023-04-25 | 南京工程学院 | Dynamic parameter inversion method, device and medium for leakage source of underwater gas pipeline |
| CN115099040B (en) * | 2022-06-29 | 2023-09-29 | 中国人民解放军91439部队 | Method and system for calculating crack area of grid model of plate-shaped structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5272646A (en) * | 1991-04-11 | 1993-12-21 | Farmer Edward J | Method for locating leaks in a fluid pipeline and apparatus therefore |
| WO2013000308A1 (en) * | 2011-06-27 | 2013-01-03 | International Business Machines Corporation | Determining fluid leakage volume in pipelines |
| CN106650120A (en) * | 2016-12-27 | 2017-05-10 | 中国石油大学(北京) | Measuring and calculating method for leakage rate of liquid hydrocarbon pipeline |
| CN107590336A (en) * | 2017-09-13 | 2018-01-16 | 哈尔滨理工大学 | Method for numerical simulation of the fuel gas pipeline leakage to internal flow |
| CN108345759A (en) * | 2018-03-13 | 2018-07-31 | 中国航天建设集团有限公司 | The measuring method of Liquefied Hydrocarbon storage device Release and dispersion regional concentration distribution |
| CN111144055A (en) * | 2019-12-27 | 2020-05-12 | 苏州大学 | Method, device and medium for determining toxic heavy gas leakage concentration distribution in urban environment |
-
2020
- 2020-06-05 CN CN202010506297.4A patent/CN111611723B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5272646A (en) * | 1991-04-11 | 1993-12-21 | Farmer Edward J | Method for locating leaks in a fluid pipeline and apparatus therefore |
| WO2013000308A1 (en) * | 2011-06-27 | 2013-01-03 | International Business Machines Corporation | Determining fluid leakage volume in pipelines |
| CN106650120A (en) * | 2016-12-27 | 2017-05-10 | 中国石油大学(北京) | Measuring and calculating method for leakage rate of liquid hydrocarbon pipeline |
| CN107590336A (en) * | 2017-09-13 | 2018-01-16 | 哈尔滨理工大学 | Method for numerical simulation of the fuel gas pipeline leakage to internal flow |
| CN108345759A (en) * | 2018-03-13 | 2018-07-31 | 中国航天建设集团有限公司 | The measuring method of Liquefied Hydrocarbon storage device Release and dispersion regional concentration distribution |
| CN111144055A (en) * | 2019-12-27 | 2020-05-12 | 苏州大学 | Method, device and medium for determining toxic heavy gas leakage concentration distribution in urban environment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111611723A (en) | 2020-09-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111611723B (en) | Urban building group conveying pipeline leakage diffusion data generation method, device and medium | |
| CN107590336B (en) | Numerical simulation method for influence of gas pipeline leakage on internal flow field | |
| Fox | Forced plume in a stratified fluid | |
| CN104143027A (en) | Fluid thermal motion simulation system based on SPH algorithm | |
| CN108038275A (en) | A kind of numerical simulation of gas pipeline leakage sound field and characteristic analysis method | |
| Wei et al. | Numerical simulation of the factors influencing dust in drilling tunnels: its application | |
| KR102307223B1 (en) | Method of Calculating Nitrogen Gas Filling Pressure Loss in Mined Cavity Zones Based on Minimum Flow Units | |
| CN104657573A (en) | Leaking gas diffusion forecasting method used for three-dimensional space | |
| CN106844913A (en) | A kind of trapped air mass thermodynamic behaviour analogy method based on three-dimensional CFD | |
| Liu et al. | Multi-block lattice Boltzmann simulations of solute transport in shallow water flows | |
| Silgado-Correa et al. | Leak release momentum and the convective flow influence on the calculation of flammable cloud | |
| KR101988557B1 (en) | Apparatus for calculating pressure lost in pipeline and method thereof | |
| Khan et al. | Modelling and simulation of heavy gas dispersion on the basis of modifications in plume path theory | |
| CN114239193B (en) | Gas pipeline leakage simulation method and device | |
| CN116644682A (en) | Wind farm noise analysis method, wind farm noise analysis equipment and computer readable storage medium | |
| CN114004114A (en) | Reservoir dam-break flood evolution rapid simulation method based on GPU parallel acceleration | |
| Liu et al. | Simulation of urban gas leakage based on Google Earth | |
| Lu et al. | Numerical Simulation Study on the Movement Characteristics of Dust Flow in Mine Working Face | |
| Hou et al. | Discussion of “rigid water column model for simulating the emptying process in a pipeline using pressurized air” by Oscar E. Coronado-Hernández, Vicente S. Fuertes-Miquel, Pedro L. Iglesias-Rey, and Francisco J. Martínez-Solano | |
| Liu et al. | AR-based Dynamic Sandbox for Hydraulic Earth-rock Dam Break | |
| CN117077575B (en) | Method and device for calculating retention time of acid fracturing acid liquor of carbonate reservoir | |
| Hu et al. | Full scale experimental and numerical simulation of outside transformer fire | |
| Wang et al. | Numerical simulation of polymer dust removal foam conveying pipeline in roadheader | |
| Wang et al. | Research on the construction ventilation scheme of concealed subway station | |
| CN117350191A (en) | Slope buried oil pipeline leakage diffusion simulation method based on DEM and CFD |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230919 Address after: 100000 22 Chaoyangmen North Street, Chaoyang District, Beijing. Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: National Petroleum and natural gas pipeline network Group Co.,Ltd. Address before: Room 1402, No. 81 Zhongshan 7th Road, Liwan District, Guangzhou City, Guangdong Province, 510145 Patentee before: South China branch of Sinopec Sales Co.,Ltd. |
|
| TR01 | Transfer of patent right |