CN114580164A - Simulation system and simulation method for designing airplane fire protection system - Google Patents
Simulation system and simulation method for designing airplane fire protection system Download PDFInfo
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Abstract
The present disclosure presents a simulation system and a simulation method for designing an aircraft fire protection system. The simulation system includes: the simulation model selection module is used for selecting a simulation model from a simulation model library, wherein the simulation model library comprises a plurality of pre-designed simulation models; the calculation engine selection module is used for determining a calculation engine corresponding to the simulation model; the parameter setting module is used for setting preset parameters of the simulation model and inputting the preset parameters into the calculation engine; the calculation engine module is used for calling a calculation engine to perform simulation calculation on the preset parameters and determining a simulation result; the calculation execution module is used for responding to a request from a user and calling the calculation engine module to execute corresponding calculation operation; and the result output module is used for determining a result output format according to the simulation result and outputting the simulation result in the target format.
Description
Technical Field
The present disclosure relates to the field of simulation technologies, and in particular, to a simulation system and a simulation method for designing an aircraft fire protection system.
Background
In the prior art, a simulation system of an aircraft fire protection system is usually adopted to design the aircraft fire protection system, but in the process of modeling and simulation using the simulation system, an operating user of the simulation system needs to have a higher technical foundation, and a large amount of time is spent on model debugging in the simulation process. Therefore, the existing simulation system for designing the aircraft fire protection system has the problems of high operation difficulty, long simulation design time and low simulation analysis efficiency.
Disclosure of Invention
In view of the above, the present disclosure provides a simulation system and a simulation method for designing an aircraft fire protection system, which are used to reduce the operation difficulty of the simulation system, reduce the simulation time, and improve the simulation analysis efficiency.
According to a first aspect of the present disclosure, there is provided a simulation system for designing an aircraft fire protection system, comprising: the simulation model selection module is used for selecting a simulation model from a simulation model library, wherein the simulation model library comprises a plurality of pre-designed simulation models; the calculation engine selection module is used for determining a calculation engine corresponding to the simulation model; the parameter setting module is used for setting preset parameters of the simulation model and inputting the preset parameters into the calculation engine; the calculation engine module is used for calling a calculation engine to perform simulation calculation on the preset parameters and determining a simulation result; the calculation execution module is used for responding to a request from a user and calling the calculation engine module to execute corresponding calculation operation, wherein the calculation operation comprises starting simulation calculation and stopping the simulation calculation; and the result output module is used for determining a result output format according to the simulation result and outputting the simulation result in the target format.
According to an embodiment of the present disclosure, the simulation system further includes an analysis module, the analysis module is configured to: setting a plurality of calculation values based on preset parameters; determining a plurality of simulation results corresponding to the plurality of calculated values based on the plurality of calculated values; comparing and sorting the plurality of simulation results, and outputting the sorted plurality of simulation results according to a preset sequence; and the analysis module is used for analyzing at least one of the concentration value of the fire extinguishing agent, the temperature value and the smoke shading rate value.
According to the embodiment of the disclosure, the analysis module is further configured to compare the plurality of simulation results with a preset standard interval, and determine an analysis result of the plurality of simulation results, where the analysis result includes a standard requirement and an unsatisfied standard requirement.
According to an embodiment of the present disclosure, wherein the simulation model library comprises at least one of the following simulation models: the power device cabin ventilation cooling model is used for analyzing the temperature condition in the power device cabin; the power device cabin oil pool fire disaster model is used for analyzing the dangerous condition of the power device cabin oil pool fire disaster; the power device cabin spray fire model is used for analyzing the dangerous condition of the power device cabin spray fire; the power device cabin fire extinguishing pipeline fire extinguishing agent flow distribution model is used for analyzing the flow and distribution conditions of the fire extinguishing agent in the power device cabin fire extinguishing agent pipeline; the power plant cabin fire extinguishing agent concentration distribution model is used for analyzing the concentration distribution of the fire extinguishing agent in the power plant cabin and the change of the concentration of the fire extinguishing agent along with time under the condition of spraying the fire extinguishing agent; the cargo compartment smoke detection model is used for analyzing the spreading characteristics of the fire smoke of the cargo compartment; the flow distribution model of the fire extinguishing agent in the cargo hold fire extinguishing pipeline is used for analyzing the flow and distribution conditions of the fire extinguishing agent in the cargo hold fire extinguishing pipeline; the cargo compartment fire extinguishing agent concentration distribution model is used for analyzing the concentration distribution of the fire extinguishing agent in the cargo compartment and the change of the concentration of the fire extinguishing agent along with time under the condition of spraying the fire extinguishing agent; the air guide pipeline overheating detection model is used for analyzing high-temperature airflow movement in the pipeline and temperature change of surrounding space outside the pipeline under the condition that the air guide pipeline leaks; and the wheel cabin overheating detection model is used for analyzing the temperature condition in the wheel cabin.
According to an embodiment of the present disclosure, wherein the powerplant bay comprises: an engine compartment and an auxiliary power compartment.
According to the embodiment of the disclosure, the parameter setting module is configured to communicate the scene feature calculation parameters with the simulation models in the simulation model library, where the scene feature calculation parameters include at least one of the following feature parameters: a scene characteristic calculation parameter communicated with the power plant compartment ventilation cooling model, comprising at least one of: parameters of the cabin air inlet flow, air inlet temperature, air inlet pressure, cabin internal pressure, wall temperature of the power device and accessories and air outlet pressure of the power device; and calculating parameters of scene characteristics transmitted with the power plant tank fire model, wherein the parameters comprise at least one of the following parameters: the parameters of the air inlet flow, the air inlet temperature, the air inlet pressure, the pressure in the cabin, the wall temperature of the power device and accessories, the pressure of an air outlet and the heat release rate of the oil pool fire; and calculating parameters of scene characteristics transmitted with the power plant cabin spray fire model, wherein the parameters comprise at least one of the following parameters: the air inlet flow, the air inlet temperature, the air inlet pressure, the pressure in the cabin, the wall temperature of the power device and accessories, the pressure parameter of an air outlet, the fuel oil spraying pressure, the flow and the diameter of a spray hole of the power device cabin; and the scene characteristic calculation parameters transmitted with the fire extinguishing agent flow distribution model of the fire extinguishing pipeline of the power plant cabin comprise at least one of the following parameters: the filling pressure, filling quality and fire extinguishing agent temperature of the fire extinguishing bottle; and calculating parameters of scene characteristics transmitted with the fire extinguishing agent concentration distribution model of the power plant cabin, wherein the parameters comprise at least one of the following parameters: the parameters of the cabin air inlet flow, the air inlet temperature, the air inlet pressure, the cabin internal pressure, the wall temperature of the power device and accessories, the pressure of an air outlet, the flow of a nozzle of a fire extinguishing pipeline, the pressure of the nozzle and the diameter of the nozzle of the fire extinguishing pipeline; calculating parameters of scene features communicated with the cargo space smoke detection model, wherein the parameters comprise at least one of the following: ambient temperature of the cargo compartment, ventilation parameters, pressure, smoke generation amount and smoke temperature; and calculating parameters of scene characteristics transmitted by the fire extinguishing agent flow distribution model of the cargo hold fire extinguishing pipeline, wherein the parameters comprise at least one of the following parameters: the filling pressure, filling quality and fire extinguishing agent temperature of the fire extinguishing bottle; and calculating parameters of scene characteristics transmitted with the concentration distribution model of the fire extinguishing agent in the cargo hold, wherein the parameters comprise at least one of the following parameters: the environment temperature of the cargo hold, ventilation parameters, pressure, the flow rate of a nozzle of the fire extinguishing pipeline, the pressure of the nozzle and the diameter of the nozzle; calculating parameters of scene characteristics communicated with the bleed air pipeline overheating detection model, wherein the parameters comprise at least one of the following parameters: the environmental temperature of the pipeline cabin, ventilation parameters, pressure, the wall temperature of the air-entraining pipeline, leakage and air-entraining temperature; and calculating parameters of the scene characteristics transmitted by the wheel cabin overheating detection model, wherein the parameters comprise at least one of the following parameters: ambient temperature, ventilation parameters, pressure, heat source temperature in the wheel cabin.
According to an embodiment of the present disclosure, the parameter setting module is further configured to communicate a general feature calculation parameter with the simulation model in the simulation model library, where the general feature calculation parameter includes: at least one of computing time, time step, maximum internal iteration number, relaxation factor, automatic saving time and solving historical parameters.
According to an embodiment of the present disclosure, wherein the result output module is configured to: determining a result output format matched with the current simulation result according to the simulation result, wherein the simulation result comprises at least one of a picture, a numerical value and a curve; inserting the simulation result into a preset position of a result output format to generate a simulation report; and outputting the simulation report.
According to a second aspect of the present disclosure, there is provided a simulation method applied to the simulation system, including: the model selection module selects a simulation model from a simulation model library, wherein the simulation model library comprises a plurality of pre-designed simulation models; the calculation engine selection module determines a calculation engine corresponding to the simulation model; the parameter setting module sets preset parameters of the simulation model and inputs the preset parameters into the calculation engine; the calculation engine module calls a calculation engine to perform simulation calculation on preset parameters and determine a simulation result; the calculation execution module responds to a request from a user and calls the calculation engine module to execute corresponding calculation operation, wherein the calculation operation comprises starting simulation calculation and stopping the simulation calculation; and the result output module determines a result output format according to the simulation result and outputs the simulation result in the target format.
According to an embodiment of the present disclosure, the simulation method further includes: after the result output module outputs the simulation result in the target format, the analysis module sets a plurality of calculation values based on preset parameters; determining a plurality of simulation results corresponding to the plurality of calculated values based on the plurality of calculated values; comparing and sorting the plurality of simulation results, and outputting the sorted plurality of simulation results according to a preset sequence; and the analysis module is used for analyzing at least one of the concentration value of the fire extinguishing agent, the temperature value and the smoke shading rate value.
Drawings
FIG. 1 schematically illustrates a schematic composition diagram of a simulation system for designing an aircraft fire protection system, in accordance with an embodiment of the disclosure;
FIG. 2 schematically illustrates a composition diagram of a simulation model library according to an embodiment of the present disclosure;
FIG. 3 schematically illustrates a flow chart of a simulation method for designing a simulation system for an aircraft fire protection system, in accordance with an embodiment of the disclosure;
FIG. 4 schematically illustrates a flow chart of a simulation method for designing a simulation system for an aircraft fire protection system, according to another embodiment of the present disclosure.
Detailed Description
Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.
Where a convention analogous to "at least one of A, B and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B and C" would include but not be limited to systems that have a alone, B alone, C alone, a and B together, a and C together, B and C together, and/or A, B, C together, etc.).
The simulation system of the existing airplane fire protection system has the problems of high operation difficulty, long simulation design time and low simulation analysis efficiency. The concept of establishing a simulation model library is adopted, the simulation model library comprises a plurality of simulation models, the simulation model library can be established by professional numerical value developers and verified, the modeling difficulty of the airplane can be reduced, and the technical requirements on airplane designers can also be reduced; on the basis, the model selection module, the parameter setting module, the result output module and the analysis module are set, only relevant design parameters are opened to designers, a large number of calculation detail parameters used by a calculation engine are shielded, and the designers can quickly master and use the parameters.
An embodiment of the present disclosure provides a simulation system for designing an aircraft fire protection system, including: the simulation model selection module is used for selecting a simulation model from a simulation model library, wherein the simulation model library comprises a plurality of pre-designed simulation models; the calculation engine selection module is used for determining a calculation engine corresponding to the simulation model; the parameter setting module is used for setting preset parameters of the simulation model and inputting the preset parameters into the calculation engine; the calculation engine module is used for calling a calculation engine to perform simulation calculation on the preset parameters and determining a simulation result; the calculation execution module is used for responding to a request from a user and calling the calculation engine module to execute corresponding calculation operation, wherein the calculation operation comprises starting simulation calculation and stopping the simulation calculation; and the result output module is used for determining a result output format according to the simulation result and outputting the simulation result in the target format.
FIG. 1 schematically illustrates a schematic composition diagram of a simulation system for designing an aircraft fire protection system, according to an embodiment of the disclosure.
According to an embodiment of the present disclosure, as shown in fig. 1, a simulation system for designing an aircraft fire protection system provided by the present disclosure includes a simulation model library 200, a model selection module 300, a parameter setting module 400, a calculation engine selection module 600, a calculation engine module 700, a calculation execution module 800, and a result output module 900.
The model selection module 300 is configured to select a simulation model 500 from a simulation model library 200 according to the simulation requirement 100 for designing the aircraft fire protection system, where the simulation model library 200 includes a plurality of pre-designed simulation models 500.
According to the embodiment of the present disclosure, the simulation model library 200 contains all models required for completing the simulation work, and all the simulation models 500 in the simulation model library 200 complete the preparation work such as early-stage modeling, grid division and the like, and can be directly selected or called for the simulation operation.
According to an embodiment of the present disclosure, the model selection module 300 is coupled to the simulation model library 200 to select a particular simulation model 500 from the simulation model library 200. Specifically, the model selection module 300 can open the simulation model library 200 according to the storage path of the simulation model library 200, and after determining the simulation model 500 in the simulation model library 200, import the simulation model 500 into the simulation system for designing the aircraft fire protection system, so as to perform the subsequent simulation operation.
And a calculation engine selection module 600, configured to determine a calculation engine corresponding to the simulation model 500.
According to embodiments of the present disclosure, the compute engine selection module 600 can invoke different versions of compute engines by determining the installation location of the compute engine. For example, the invoked compute engine may be STAR CCM +. According to actual requirements, the calculation engine selection module 600 selects a new version of STAR CCM + to ensure the applicability of the calculation engine.
The parameter setting module 400 is configured to set preset parameters of the simulation model 500, and input the preset parameters into the calculation engine determined by the calculation engine selection module 600. For example, for the power plant compartment fire suppressant concentration distribution model, the predetermined parameter may be at least one of power plant compartment inlet air flow, inlet air temperature, inlet air pressure, compartment pressure, power plant and accessory wall temperature, outlet air pressure parameter, fire suppression line nozzle flow, nozzle pressure, nozzle diameter.
According to the embodiment of the present disclosure, the preset parameters may be changed during the simulation operation, and the parameter setting module 400 can input the updated preset parameters into the determined calculation engine. Still taking the power device cabin fire extinguishing agent concentration distribution model as an example, after the preset parameters are updated, the parameter setting module 400 can introduce the changed parameters of the power device cabin air intake flow, air intake temperature, air intake pressure, cabin internal pressure, power device and accessory wall temperature, air outlet pressure, fire extinguishing pipeline nozzle flow, nozzle pressure and nozzle diameter into the calculation engine.
The calculation engine module 700 is configured to invoke a calculation engine to perform simulation calculation on the preset parameters imported by the parameter setting module 400, and determine a simulation result. For example, where the compute engine selected by compute engine selection module 600 is STAR CCM +16.06.008, the compute engine module performs simulation calculations on the preset parameters using STAR CCM + 16.06.008.
The calculation execution module 800 is configured to, in response to a request from a user, invoke the calculation engine module 700 to execute a corresponding calculation operation.
According to the embodiment of the present disclosure, the simulation system may present a corresponding operation interface to the user, where the operation interface facing the user includes a plurality of operation buttons, and the plurality of operation buttons are connected to the calculation execution module 800. After the user performs the operation on the operation interface, the calculation execution module 800 calls the calculation engine module 700 to perform the calculation operation in response to the request from the user. For example, the user's operation interface includes "calculation execution" and "calculation suspension" buttons, and the calculation execution module 800 calls the calculation engine module 700 to execute the start simulation calculation in response to the request of the "calculation execution" button; the calculation execution module 800 invokes the calculation engine module 700 to execute the suspension simulation calculation in response to a request of the "calculation suspension" button.
And a result output module 900, configured to determine a result output format according to the simulation result, and output the aircraft fire protection system design simulation result 1100 in the target format.
According to the method, the simulation model is directly selected from the simulation model library, so that the processes of modeling and debugging the simulation model by an operator based on professional knowledge are avoided, the modeling difficulty of the airplane is reduced, the technical requirements on airplane designers are reduced, and meanwhile, the modeling time of the airplane model is also reduced; by setting the model selection module, the parameter setting module and the result output module, only relevant design parameters are opened to an operator, a large number of calculation detail parameters used by a calculation engine are shielded, the operator can quickly master the use of the simulation system, the time for the operator to be familiar with the operation system is reduced, and the simulation design efficiency is improved; the simulation result in the target format is automatically generated through the result output module, and the working efficiency of simulation result analysis can be improved. The simulation system for designing the aircraft fire protection system can reduce the simulation difficulty of the fire protection system, reduce the operation time and enable aircraft designers to put more energy into the design.
According to an embodiment of the present disclosure, as shown in fig. 1, the simulation system further includes an analysis module 1000, the analysis module 1000 being capable of setting a plurality of calculation values based on preset parameters set by the parameter setting module 400, and determining a plurality of simulation results corresponding to the plurality of calculation values using the calculation execution model 800; comparing and sorting the plurality of simulation results, and outputting the sorted plurality of simulation results according to a preset sequence. For example, taking a power plant cabin fire extinguishing agent concentration distribution model as an example, the preset parameter is intake pressure, the preset parameter is 0.4MPa and 0.5MPa, the calculation execution model 800 obtains simulation results corresponding to the preset parameter of 0.4MPa and 0.5MPa, the analysis module 1000 can operate and compare the plurality of simulation results, and then output the plurality of sequenced simulation results according to a preset sequence.
According to an embodiment of the present disclosure, the sorting according to the preset order may be determined according to a degree of error of the simulation result from the technical standard. For example, the simulation results are sorted in order of the degree of error from small to large, and then the simulation results are output.
According to an embodiment of the disclosure, the analysis module 1000 can directly output the sequenced multiple aircraft fire protection system design simulation results 1100; the sorted target format aircraft fire protection system design simulation results 1100 may also be output by the result output module 900.
According to an embodiment of the present disclosure, the analysis module 1000 is capable of analyzing at least one of a fire suppressant concentration value, a temperature value, a smoke opacity value.
According to an embodiment of the present disclosure, the analysis module 1000 is further configured to compare the plurality of simulation results with a preset standard interval, and determine an analysis result of the plurality of simulation results, where the analysis result includes a requirement that meets the standard and a requirement that does not meet the standard.
According to the embodiment of the disclosure, the preset standard interval can be set as a numerical interval of a standard requirement, a plurality of simulation results are compared with the numerical interval of the standard requirement, and under the condition that the simulation results are located in the standard numerical interval, the analysis results of the simulation results are determined to meet the standard requirement; and determining that the analysis result of the simulation result does not meet the standard requirement under the condition that the simulation result is outside the standard numerical value interval.
According to the simulation system for designing the airplane fire protection system, the required simulation result is automatically output through the analysis module, the simulation results under different parameters are automatically calculated and compared, the analysis result of the simulation result is determined, the analysis time of designers can be effectively reduced, and the simulation result analysis work efficiency is improved.
FIG. 2 schematically shows a composition diagram of a simulation model library according to an embodiment of the present disclosure.
According to an embodiment of the present disclosure, as shown in FIG. 2, the simulation model library 200 includes a powerplant bay simulation model 210, a cargo bay simulation model 220, and other bay simulation models 230.
As shown in FIG. 2, the power plant compartment simulation model 210 includes a power plant compartment ventilation cooling model 211, a power plant compartment sump fire model 212, a power plant compartment spray fire model 213, a power plant compartment fire suppression line fire suppression agent flow distribution model 214, and a power plant compartment fire suppression agent concentration distribution model 215.
The powerplant bay ventilation cooling model 211 is used to analyze temperature conditions within the powerplant bay. The power plant compartment sump fire model 212 is used to analyze a hazard condition of the power plant compartment sump fire. The power plant compartment spray fire model 213 is used to analyze the risk profile of the power plant compartment spray fire. The power plant compartment fire suppression pipeline fire suppression agent flow distribution model 214 is used to analyze the flow and distribution of fire suppression agent within the power plant compartment fire suppression agent pipeline. The power plant compartment suppressant concentration distribution model 215 is used to analyze the concentration distribution of suppressant within the power plant compartment and the concentration of suppressant over time, as is the case when suppressant is sprayed.
As shown in fig. 2, the cargo space simulation model 220 includes a cargo space smoke detection model 221, a cargo space fire extinguishing line fire extinguishing agent flow distribution model 222, and a cargo space fire extinguishing agent concentration distribution model 223.
The cargo compartment smoke detection model 221 is used to analyze the propagation characteristics of the cargo compartment fire smoke. The cargo space fire suppression pipeline fire suppression agent flow distribution model 222 is used to analyze the flow and distribution of fire suppression agent within the cargo space fire suppression agent pipeline. The cargo compartment fire extinguishing agent concentration distribution model 223 is used to analyze the concentration distribution of the fire extinguishing agent in the cargo compartment and the change of the concentration of the fire extinguishing agent with time in the case of spraying the fire extinguishing agent;
as shown in fig. 2, the other cabin simulation models 230 include a bleed air duct overheating detection model 231 and a wheel cabin overheating detection model 232.
The bleed air duct overheating detection model 231 is used to analyze the high temperature air flow movement induced within the duct and the temperature changes induced in the surrounding space outside the duct in the event of a leak in the bleed air duct. The wheel well superheat detection model 232 is used to analyze the temperature conditions within the wheel well.
According to an embodiment of the present disclosure, a powerplant pod comprises: an engine compartment and an auxiliary power compartment.
According to the embodiment of the present disclosure, as shown in fig. 1 and fig. 2, the parameter setting module 400 is configured to communicate scene feature calculation parameters with the simulation models 500 in the simulation model library 200, where the scene feature calculation parameters include at least one of the following feature parameters:
the scene characteristic calculation parameters communicated with the power plant compartment ventilation cooling model 211 include at least one of: the parameters of the cabin air inlet flow, the air inlet temperature, the air inlet pressure, the cabin internal pressure, the wall temperature of the power device and accessories and the air outlet pressure of the power device.
The scene characteristic calculation parameters communicated with the power plant sump fire model 212 include at least one of: the parameters of the inlet air flow, inlet air temperature, inlet air pressure, pressure in the cabin, wall temperature of the power device and accessories, pressure of an air outlet and heat release rate of an oil pool fire.
The scene characteristic calculation parameters communicated with the powerplant bay spray fire model 213 include at least one of: the power device cabin comprises air inlet flow, air inlet temperature, air inlet pressure, cabin pressure, wall temperature of the power device and accessories, air outlet pressure parameters, fuel oil spraying pressure, flow and spray hole diameter.
The scene characteristic calculation parameters communicated with the power plant compartment fire suppression pipeline fire suppression agent flow distribution model 214 include at least one of: filling pressure of the fire extinguishing bottle, filling quality and fire extinguishing agent temperature.
The scene characteristic calculation parameters communicated with the power plant compartment suppressant concentration distribution model 215 include at least one of: the parameters of the cabin air inlet flow, the air inlet temperature, the air inlet pressure, the cabin internal pressure, the wall temperature of the power device and accessories, the pressure of an air outlet, the flow of a nozzle of a fire extinguishing pipeline, the pressure of the nozzle and the diameter of the nozzle.
The scene characteristic calculation parameters communicated with the cargo compartment smoke detection model 221 include at least one of: ambient temperature of the cargo compartment, ventilation parameters, pressure, smoke generation, and smoke temperature.
The scene characteristic calculation parameters communicated with the cargo space fire suppression pipeline fire suppression agent flow distribution model 222 include at least one of: filling pressure of the fire extinguishing bottle, filling quality and fire extinguishing agent temperature.
The scene characteristic calculation parameters communicated with the cargo compartment fire extinguishing agent concentration distribution model 223 include at least one of: ambient temperature of the cargo compartment, ventilation parameters, pressure, flow rate of nozzles of the fire-extinguishing pipeline, pressure of the nozzles, and diameter of the nozzles.
The scene characteristic calculation parameters communicated with the bleed air duct overheating detection model 231 include at least one of: ambient temperature of the pipeline cabin, ventilation parameters, pressure, wall temperature of the bleed air pipeline, leakage amount and bleed air temperature.
The scene characteristic calculation parameters communicated with the wheel well overheating detection model 232 include at least one of: ambient temperature, ventilation parameters, pressure, heat source temperature in the wheel cabin.
According to an embodiment of the present disclosure, as shown in fig. 1, the parameter setting module 400 is further configured to communicate with the simulation model 500 in the simulation model library 200 general feature calculation parameters, which include: at least one of computing time, time step, maximum internal iteration number, relaxation factor, automatic saving time and solving historical parameters.
According to an embodiment of the present disclosure, the result output module 900 is configured to: determining a result output format matched with the current simulation result according to the simulation result determined by the calculation engine module 700, wherein the simulation result comprises at least one of a picture, a numerical value and a curve; and inserting the simulation result into a preset position of a result output format, generating a simulation report, and finally outputting the simulation report. Specifically, the result output module 900 automatically arranges the calculated simulation result after the calculation engine module 700 completes the calculation; and after determining a result output format corresponding to the current simulation result, inserting the sorted simulation result into a target position of the result output format.
According to the embodiment of the present disclosure, the target format of the simulation report is a word format, and the result output module 900 may insert the simulation result into a preset position of the word template to automatically generate the simulation report. For example, taking a power plant cabin fire extinguishing agent concentration distribution model as an example, the output report of the power plant cabin fire extinguishing agent concentration distribution model comprises a simulation model and a calculation result, wherein the simulation model comprises a numerical model and a grid model. The numerical model introduces physical models such as multi-component gas, implicit transient state, turbulence and the like selected by a fire extinguishing agent concentration distribution model of the power plant cabin; the grid model introduces grid division methods such as surface reconstruction, automatic surface repair, polyhedral grid generator and the like, and the total number of grids. The calculation result part comprises a speed field, a temperature field and a fire extinguishing agent concentration field, wherein the speed field shows a speed flow chart and a speed distribution cloud chart in the power device cabin at a specific solving time in the form of a cloud chart; the temperature field shows a temperature distribution cloud chart in the power plant cabin at a specific solving time in the form of a cloud chart; the fire extinguishing agent concentration field comprises a fire extinguishing agent concentration monitoring point position graph and a curve of the fire extinguishing agent concentration of the monitoring point along with the change of time. The result output module 900 determines that the word report to be output is the report of the power plant cabin fire extinguishing agent concentration distribution model according to the simulation result obtained by the calculation engine module 700, and at this time, the result output module 900 inserts the corresponding picture, numerical value and curve into the preset position of the template to generate the finished word version simulation result.
According to the method and the device, the required simulation result is automatically output by using the result output module, the report is automatically generated, the analysis time of designers can be effectively reduced, the simulation result analysis working efficiency is improved, and the readability of the simulation result can be improved through the simulation result in the target format.
The embodiment of the present disclosure further provides a simulation method applied to the simulation system, including: the model selection module selects a simulation model from a simulation model library, wherein the simulation model library comprises a plurality of pre-designed simulation models; the calculation engine selection module determines a calculation engine corresponding to the simulation model; the parameter setting module sets preset parameters of the simulation model and inputs the preset parameters into the calculation engine; the calculation engine module calls a calculation engine to perform simulation calculation on preset parameters and determine a simulation result; the calculation execution module responds to a request from a user and calls the calculation engine module to execute corresponding calculation operation, wherein the calculation operation comprises starting simulation calculation and stopping the simulation calculation; and the result output module determines a result output format according to the simulation result and outputs the simulation result in the target format.
FIG. 3 schematically illustrates a flow chart of a simulation method for designing a simulation system for an aircraft fire protection system, according to an embodiment of the disclosure.
As shown in fig. 3, the simulation method includes operations S301 to S306.
In operation S301, the model selection module selects a simulation model from a simulation model library, wherein the simulation model library includes a plurality of previously designed simulation models.
According to the embodiment of the disclosure, the simulation model library is established according to the design requirements of the aircraft fire protection system, and the simulation models contained in the simulation model library are all models which are stored in the simulation system after being simulated and debugged by professionals, and the simulation models can be directly applied. For example, for the power plant cabin fire extinguishing agent concentration distribution model, a professional carries out power plant cabin fire extinguishing agent concentration distribution simulation, and stores the power plant cabin fire extinguishing agent concentration distribution model into a simulation model library after successful modeling and debugging. In practical application, a designer does not need to model and debug the simulation model, and can directly call the corresponding simulation model from a simulation model library for the simulation system.
According to the embodiment of the disclosure, under the condition that a designer carries out the simulation of the concentration distribution of the fire extinguishing agent in the power plant cabin, the calculation engine selection module needs to select a model of the concentration distribution of the fire extinguishing agent in the power plant cabin.
In operation S302, the calculation engine selection module determines a calculation engine corresponding to the simulation model.
According to an embodiment of the present disclosure, the compute engine selection module determines a compute engine that can be applied to the selected simulation model, e.g., selects STAR CCM + 16.06.008.
In operation S303, the parameter setting module sets preset parameters of the simulation model and inputs the preset parameters to the calculation engine.
According to the embodiment of the disclosure, under the condition that the simulation model is determined and is imported into the simulation system, the preset parameters of the simulation model are set through the parameter setting module on the parameter setting interface, and the parameters are transmitted to the calculation engine. Still take the development of the concentration distribution simulation of the fire extinguishing agent in the cabin of the power plant as an example, parameters such as air intake flow, air intake temperature and air intake pressure are set on a parameter setting interface through a parameter setting module, and the parameter setting module transmits the parameters to a calculation engine after the setting is finished. In the case that the preset parameter is changed during the simulation process, the parameter setting module may input the changed preset parameter into the calculation engine, so that the simulation model updates the simulation result. For example, after the intake air flow rate is changed, the value corresponding to the intake air flow rate in the simulation model is also updated.
In operation S304, the calculation engine module invokes the calculation engine to perform simulation calculation on the preset parameters, and determines a simulation result.
In operation S305, the calculation execution module calls the calculation engine module to execute a corresponding calculation operation in response to a request from a user.
According to the embodiment of the disclosure, the calculation execution module can respond to a request from a user through the operation interface, for example, the user request from a calculation execution button of the operation interface submits the simulation model to perform calculation; the process being computed is aborted in response to a user request from a "compute abort" button of the operator interface.
In operation S306, the result output module determines a result output format according to the simulation result, and outputs the simulation result in the target format.
According to the embodiment of the disclosure, the target format output by the result output module is a word format, and under the condition that the result output format is determined according to the simulation result, the corresponding simulation result is stored in the target position in the word report, and the simulation result in the word format is output. For example, a simulation result is obtained according to the concentration distribution model of the fire extinguishing agent in the power plant cabin, the simulation result comprises pictures, curves and numerical values, a corresponding word format report template is determined according to the format of the output simulation result, the pictures, the curves and the numerical values are input and stored to the corresponding positions of the report template, and the simulation result is output.
FIG. 4 schematically illustrates a flow chart of a simulation method for designing a simulation system for an aircraft fire protection system, according to another embodiment of the present disclosure.
As shown in fig. 4, the simulation method includes operations S301 to S306, and further includes operations S401 to S403, where the operations S301 to S306 are the same as or similar to the operations in fig. 3, and are not described herein again.
In operation S401, after the result output module outputs the simulation result in the target format, the analysis module sets a plurality of calculation values based on preset parameters.
According to the embodiment of the disclosure, a plurality of calculation values close to the preset parameters are automatically set according to the preset parameter analysis module.
In operation S402, a plurality of simulation results corresponding to the plurality of calculation values are determined based on the plurality of calculation values.
According to the embodiment of the disclosure, the analysis module performs parallel computation according to a plurality of set computation values to obtain a plurality of simulation results.
In operation S403, the plurality of simulation results are compared and sorted, and the sorted plurality of simulation results are output in a preset order.
According to the embodiment of the disclosure, under the condition of developing the fire extinguishing agent concentration distribution simulation of the power plant cabin, the speed field, the temperature field and the fire extinguishing agent concentration distribution field in the power plant cabin can be checked through the output sequenced simulation results. And the simulation result of the target format output by the result output module can be called by the analysis module to check a speed field, a temperature field and a fire extinguishing agent concentration distribution field in the cabin of the power plant.
According to the method, models which are modeled at the early stage are stored in the simulation model library, the models to be calculated are selected from the simulation model library by using the model selection module, the parameter setting, calculation execution and other work of simulation calculation are completed by using the calculation engine selection module, the calculation engine module and the parameter setting module, and finally, the simulation calculation result is analyzed by using the result output module and the analysis module, so that the time of simulation calculation is saved, non-professionals can complete the design simulation work of a complex airplane fire protection system by using simple model calculation, and the work efficiency is improved.
The embodiments of the present disclosure have been described above. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although the embodiments are described separately above, this does not mean that the measures in the embodiments cannot be used in advantageous combination. The scope of the disclosure is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be devised by those skilled in the art without departing from the scope of the present disclosure, and such alternatives and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. A simulation system for designing an aircraft fire protection system, comprising:
the simulation system comprises a model selection module, a simulation model selection module and a simulation model selection module, wherein the model selection module is used for selecting a simulation model from a simulation model library, and the simulation model library comprises a plurality of pre-designed simulation models;
the calculation engine selection module is used for determining a calculation engine corresponding to the simulation model;
the parameter setting module is used for setting preset parameters of the simulation model and inputting the preset parameters into the calculation engine;
the calculation engine module is used for calling the calculation engine to perform simulation calculation on the preset parameters and determining a simulation result;
the calculation execution module is used for responding to a request from a user and calling the calculation engine module to execute corresponding calculation operation, wherein the calculation operation comprises starting simulation calculation and stopping the simulation calculation; and
and the result output module is used for determining a result output format according to the simulation result and outputting the simulation result in the target format.
2. The system of claim 1, further comprising an analysis module to:
setting a plurality of calculation values based on the preset parameters;
determining a plurality of simulation results corresponding to the plurality of calculated numerical values based on the plurality of calculated numerical values;
comparing and sorting the plurality of simulation results, and outputting the sorted plurality of simulation results according to a preset sequence; and
the analysis module is used for analyzing at least one of a concentration value of the fire extinguishing agent, a temperature value and a smoke shading rate value.
3. The system of claim 2, wherein the analysis module is further configured to compare the plurality of simulation results with a preset standard interval, and determine an analysis result of the plurality of simulation results, wherein the analysis result includes a standard requirement being met and a standard requirement not being met.
4. The system of claim 1, wherein the library of simulation models comprises at least one of the following plurality of simulation models:
the power device cabin ventilation cooling model is used for analyzing the temperature condition in the power device cabin;
the power device cabin oil pool fire disaster model is used for analyzing the dangerous condition of the power device cabin oil pool fire disaster;
the power device cabin spray fire model is used for analyzing the dangerous condition of the power device cabin spray fire;
the power device cabin fire extinguishing pipeline fire extinguishing agent flow distribution model is used for analyzing the flow and distribution conditions of the fire extinguishing agent in the power device cabin fire extinguishing agent pipeline;
the power plant cabin fire extinguishing agent concentration distribution model is used for analyzing the concentration distribution of the fire extinguishing agent in the power plant cabin and the change of the concentration of the fire extinguishing agent along with time under the condition of spraying the fire extinguishing agent;
the cargo compartment smoke detection model is used for analyzing the spreading characteristics of the fire smoke of the cargo compartment;
the flow distribution model of the fire extinguishing agent in the cargo hold fire extinguishing pipeline is used for analyzing the flow and distribution condition of the fire extinguishing agent in the cargo hold fire extinguishing pipeline;
the system comprises a cargo compartment fire extinguishing agent concentration distribution model, a fire extinguishing agent concentration analysis model and a fire extinguishing agent concentration analysis model, wherein the cargo compartment fire extinguishing agent concentration distribution model is used for analyzing the concentration distribution of the fire extinguishing agent in a cargo compartment and the change of the fire extinguishing agent concentration along with time under the condition of spraying the fire extinguishing agent;
the system comprises a bleed air pipeline overheating detection model, a pipeline temperature detection model and a pipeline temperature detection model, wherein the bleed air pipeline overheating detection model is used for analyzing high-temperature airflow movement in a pipeline and temperature change of surrounding space outside the pipeline under the condition that the bleed air pipeline leaks; and
and the wheel cabin overheating detection model is used for analyzing the temperature condition in the wheel cabin.
5. The system of claim 4, wherein the powerplant bay comprises: an engine compartment and an auxiliary power compartment.
6. The system of claim 4, wherein the parameter setting module is configured to communicate scene feature calculation parameters with the simulation models in the simulation model library, wherein the scene feature calculation parameters include at least one of the following feature parameters:
a scene characteristic calculation parameter communicated with the power plant compartment ventilation cooling model, comprising at least one of: parameters of the cabin air inlet flow, air inlet temperature, air inlet pressure, cabin internal pressure, wall temperature of the power device and accessories and air outlet pressure of the power device;
calculating parameters of scene characteristics transmitted with the power plant tank fire model, wherein the parameters comprise at least one of the following parameters: the parameters of the air inlet flow, the air inlet temperature, the air inlet pressure, the pressure in the cabin, the wall temperature of the power device and accessories, the pressure of an air outlet and the heat release rate of the oil pool fire;
calculating parameters of scene characteristics communicated with the power plant compartment spray fire model, including at least one of: the air inlet flow, the air inlet temperature, the air inlet pressure, the pressure in the cabin, the wall temperature of the power device and accessories, the pressure parameter of an air outlet, the fuel oil spraying pressure, the flow and the diameter of a spray hole of the power device cabin;
the scene characteristic calculation parameters transmitted with the power plant cabin fire extinguishing pipeline fire extinguishing agent flow distribution model comprise at least one of the following parameters: the filling pressure, filling quality and fire extinguishing agent temperature of the fire extinguishing bottle;
and calculating parameters of scene characteristics transmitted with the power plant cabin fire extinguishing agent concentration distribution model, wherein the parameters comprise at least one of the following parameters: the parameters of cabin air inlet flow, air inlet temperature, air inlet pressure, cabin internal pressure, wall temperature of a power device and accessories, air outlet pressure, flow of a nozzle of a fire extinguishing pipeline, pressure of the nozzle and the diameter of the nozzle;
calculating parameters of scene features communicated with the cargo space smoke detection model, including at least one of: ambient temperature of the cargo compartment, ventilation parameters, pressure, smoke generation amount and smoke temperature;
scene characteristic calculation parameters communicated with the cargo space fire extinguishing pipeline fire extinguishing agent flow distribution model include at least one of: the filling pressure, filling quality and fire extinguishing agent temperature of the fire extinguishing bottle;
calculating parameters of scene characteristics communicated with the cargo compartment fire extinguishing agent concentration distribution model, including at least one of: the environment temperature of the cargo hold, ventilation parameters, pressure, the flow rate of a nozzle of a fire extinguishing pipeline, the pressure of the nozzle and the diameter of the nozzle;
scene characteristic calculation parameters communicated with the bleed air pipeline overheating detection model, including at least one of: the environmental temperature of the pipeline cabin, ventilation parameters, pressure, the wall temperature of the air-entraining pipeline, leakage and air-entraining temperature;
calculating parameters of scene characteristics transmitted with the wheel well overheating detection model, wherein the parameters comprise at least one of the following parameters: ambient temperature, ventilation parameters, pressure, heat source temperature in the wheel cabin.
7. The system of claim 1, wherein the parameter setting module is further configured to communicate generic feature computation parameters with the simulation models in the simulation model library, the generic feature computation parameters including: at least one of computing time, time step, maximum internal iteration number, relaxation factor, automatic saving time and solving historical parameters.
8. The system of claim 1, wherein the result output module is to:
determining a result output format matched with the current simulation result according to the simulation result, wherein the simulation result comprises at least one of a picture, a numerical value and a curve;
inserting the simulation result into a preset position of the result output format to generate a simulation report; and
and outputting the simulation report.
9. A simulation method applied to the system according to one of claims 1 to 8, comprising:
the method comprises the following steps that a model selection module selects a simulation model from a simulation model library, wherein the simulation model library comprises a plurality of pre-designed simulation models;
a calculation engine selection module determines a calculation engine corresponding to the simulation model;
the parameter setting module sets preset parameters of the simulation model and inputs the preset parameters into the calculation engine;
the calculation engine module calls the calculation engine to perform simulation calculation on the preset parameters, and a simulation result is determined;
the calculation execution module responds to a request from a user and calls the calculation engine module to execute corresponding calculation operation, wherein the calculation operation comprises starting simulation calculation and stopping the simulation calculation; and
and the result output module determines a result output format according to the simulation result and outputs the simulation result in the target format.
10. The method of claim 9, further comprising:
after the result output module outputs the simulation result in the target format, the analysis module sets a plurality of calculation values based on the preset parameters;
determining a plurality of simulation results corresponding to the plurality of calculated values based on the plurality of calculated values;
comparing and sorting the plurality of simulation results, and outputting the sorted plurality of simulation results according to a preset sequence; and
the analysis module is used for analyzing at least one of a concentration value of the fire extinguishing agent, a temperature value and a smoke shading rate value.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115238452A (en) * | 2022-06-09 | 2022-10-25 | 珠海市锝力影像科技有限公司 | Processing simulation method and dry grinding processing method of aluminum pipe for selenium drum magnetic roller |
| CN115845290A (en) * | 2022-12-27 | 2023-03-28 | 中国航空工业集团公司西安飞机设计研究所 | Fire extinguishing pipe network for engine compartment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115238452A (en) * | 2022-06-09 | 2022-10-25 | 珠海市锝力影像科技有限公司 | Processing simulation method and dry grinding processing method of aluminum pipe for selenium drum magnetic roller |
| CN115845290A (en) * | 2022-12-27 | 2023-03-28 | 中国航空工业集团公司西安飞机设计研究所 | Fire extinguishing pipe network for engine compartment |
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