CN118130136A - Evaluation method and system of gas stove, electronic equipment, medium and product - Google Patents
Evaluation method and system of gas stove, electronic equipment, medium and product Download PDFInfo
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- CN118130136A CN118130136A CN202410278269.XA CN202410278269A CN118130136A CN 118130136 A CN118130136 A CN 118130136A CN 202410278269 A CN202410278269 A CN 202410278269A CN 118130136 A CN118130136 A CN 118130136A
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- 238000011156 evaluation Methods 0.000 title claims abstract description 40
- 239000007924 injection Substances 0.000 claims abstract description 54
- 238000002347 injection Methods 0.000 claims abstract description 54
- 238000004088 simulation Methods 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims description 83
- 238000000034 method Methods 0.000 claims description 25
- 238000002485 combustion reaction Methods 0.000 claims description 24
- 238000004590 computer program Methods 0.000 claims description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 230000007847 structural defect Effects 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 7
- 239000002737 fuel gas Substances 0.000 claims description 6
- 230000006870 function Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000011158 quantitative evaluation Methods 0.000 abstract description 3
- 239000003570 air Substances 0.000 description 83
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 18
- 239000012530 fluid Substances 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 210000003918 fraction a Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- JCLFHZLOKITRCE-UHFFFAOYSA-N 4-pentoxyphenol Chemical compound CCCCCOC1=CC=C(O)C=C1 JCLFHZLOKITRCE-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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- General Physics & Mathematics (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention discloses a gas stove evaluation method, a system, electronic equipment, a medium and a product, wherein the gas stove evaluation method comprises the following steps: establishing a three-dimensional model of a burner of the gas stove, and constructing a temperature boundary condition based on the measured temperature of the inner wall surface of the burner; performing steady-state flow field simulation on the three-dimensional model according to the temperature boundary condition to obtain an actual air quantity; determining a theoretical air quantity; calculating a primary air coefficient according to the ratio of the actual air quantity to the theoretical air quantity; and evaluating the injection performance of the burner according to the primary air coefficient. According to the invention, steady-state flow field simulation is carried out on the three-dimensional model according to the temperature boundary condition to obtain the actual air quantity, the injection performance of the burner is evaluated according to the ratio of the actual air quantity to the theoretical air quantity, a chemical reaction equation is not involved, quantitative evaluation of the injection performance of the burner is realized, and the burner structure can be improved according to the evaluation result.
Description
Technical Field
The invention relates to the technical field of stoves, in particular to a gas stove evaluation method, a gas stove evaluation system, electronic equipment, media and products.
Background
In the development process of the current gas stove, the problems of unqualified efficiency, super liquefied gas, butane Huang Huo and the like often occur. For the problems, the prior art generally improves the performance of the burner based on test proofing, or uses the combustion working condition of the simulated stove to guide the design of the burner so as to obtain the burner with better performance. Whether experimental proofing or simulation, the performance of the burner needs to be evaluated to obtain a relatively ideal burner. For the performance evaluation of the burner in the test proofing process, the performance of the burner is generally evaluated by measuring the smoke value and observing the flame color by naked eyes at present, but the method has the advantages of long time period, limited information quantity, expensive research cost, larger subjective influence on the naked eye direct judgment method, incapability of quantitatively evaluating the injection performance of different burners, environmental influence on the measurement result of a smoke analyzer and inaccuracy. For the performance evaluation of the burner in the simulation process, because the heat loss influence factors under the combustion working condition are particularly complex, the efficiency data of the test personnel tested at different moments are influenced by air sources and environmental factors, and certain fluctuation exists in the data, so that the boundary condition of the combustion working condition cannot be accurately obtained, and the combustion numerical model has more deviation from the actual, so that the method is unreliable.
Disclosure of Invention
The invention aims to overcome the defects of complex and unreliable evaluation of injection performance of a burner in the prior art, and provides an evaluation method, system, electronic equipment, medium and product of the burner.
The invention solves the technical problems by the following technical scheme:
The invention provides an evaluation method of a gas stove, which comprises the following steps:
establishing a three-dimensional model of a burner of the gas stove, and constructing a temperature boundary condition based on the measured temperature of the inner wall surface of the burner;
Performing steady-state flow field simulation on the three-dimensional model according to the temperature boundary condition to obtain an actual air quantity; the actual air quantity is used for representing the capability of the nozzle of the burner for jetting high-speed fuel gas and injecting surrounding air;
determining a theoretical air quantity; wherein the theoretical air quantity is used for representing the air quantity determined according to the law of atomic conservation during complete combustion;
Calculating a primary air coefficient according to the ratio of the actual air quantity to the theoretical air quantity;
And evaluating the injection performance of the burner according to the primary air coefficient.
Preferably, the step of performing steady-state flow field simulation on the three-dimensional model according to the temperature boundary condition includes:
And according to the temperature boundary conditions, performing steady-state flow field simulation on the three-dimensional model based on a turbulence model, a component transportation equation and a wall equation.
Preferably, the step of determining the theoretical air amount includes:
acquiring a first average molar mass fraction of the gas in the outlet plane of the injection pipe of the gas stove;
Determining a second average molar mass fraction according to the law of conservation of atoms; wherein the second average molar mass fraction is used to characterize an average molar mass fraction of oxygen consumed by the burner at the time of complete combustion;
The theoretical air quantity is determined according to the ratio of oxygen in the air.
Preferably, the turbulence model comprises a turbulence dissipation ratio transport equation;
And/or the number of the groups of groups,
The component transport equation includes a convection-diffusion equation;
And/or the number of the groups of groups,
The wall equation includes a standard wall function.
Preferably, the step of evaluating the injection performance of the burner according to the primary air coefficient includes:
when the primary air coefficient is smaller than a first threshold value, evaluating that the injection performance of the burner is poor;
When the primary air coefficient is larger than or equal to the first threshold value and smaller than a second threshold value, evaluating that the ejection performance of the burner is good;
When the primary air coefficient is greater than or equal to the second threshold value, evaluating that the injection performance of the burner is excellent;
wherein the first threshold is less than the second threshold.
Preferably, when evaluating that the injection performance of the burner is poor, the evaluation method of the gas stove further includes:
acquiring a characteristic section speed cloud picture of an injection pipe of the gas stove according to a steady-state flow field simulation result;
Determining structural defects of the burner according to the characteristic section speed cloud picture of the injection pipe;
and updating the structure of the burner aiming at the structural defect. The invention also provides an evaluation system of the gas stove, which comprises:
The building module is used for building a three-dimensional model of the burner of the gas stove and building a temperature boundary condition based on the measured temperature of the inner wall surface of the burner;
The acquisition module is used for carrying out steady-state flow field simulation on the three-dimensional model according to the temperature boundary condition so as to obtain the actual air quantity; the actual air quantity is used for representing the capability of the nozzle of the burner for jetting high-speed fuel gas and injecting surrounding air;
a determining module for determining a theoretical air amount; wherein the theoretical air quantity is used for representing the air quantity determined according to the law of atomic conservation during complete combustion;
the calculation module is used for calculating a primary air coefficient according to the ratio of the actual air quantity to the theoretical air quantity;
and the evaluation module is used for evaluating the injection performance of the burner according to the primary air coefficient.
The invention also provides electronic equipment, which comprises a memory, a processor and a computer program stored on the memory and used for running on the processor, wherein the evaluation method of the gas stove is realized when the processor executes the computer program.
The present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described gas range evaluation method.
The invention also provides a computer program product, which comprises a computer program, wherein the computer program realizes the evaluation method of the gas stove when being executed by a processor.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.
The invention has the positive progress effects that:
According to the invention, steady-state flow field simulation is carried out on the three-dimensional model according to the temperature boundary condition to obtain the actual air quantity, the injection performance of the burner is evaluated according to the ratio of the actual air quantity to the theoretical air quantity, a chemical reaction equation is not involved, quantitative evaluation of the injection performance of the burner is realized, and the burner structure can be improved according to the evaluation result.
Drawings
Fig. 1 is a flowchart of an evaluation method of a gas cooker of embodiment 1 of the invention;
fig. 2 is a schematic structural view of an evaluation system of a gas range according to embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to embodiment 3 of the present invention.
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.
Example 1
The present embodiment provides a method for evaluating a gas stove, referring to fig. 1, the method for evaluating a gas stove includes:
S1, establishing a three-dimensional model of a burner of the gas stove, and constructing a temperature boundary condition based on the measured temperature of the inner wall surface of the burner.
The temperature boundary condition is the combustion temperature of each part of the burner under the combustion working condition.
S2, performing steady-state flow field simulation on the three-dimensional model according to the temperature boundary condition to obtain an actual air quantity.
The actual air quantity is used for representing the capability of the nozzle of the burner to jet high-speed fuel gas and jet ambient air.
S3, determining a theoretical air quantity.
The theoretical air quantity is used for representing the air quantity determined according to the law of conservation of atoms when the burner of the gas stove is completely combusted.
In an alternative embodiment, step S3 includes:
s31, obtaining a first average molar mass fraction of the gas on the outlet plane of the injection pipe of the gas stove.
S32, determining a second average molar mass fraction according to the atom conservation law.
Wherein the second average molar mass fraction is used to characterize the average molar mass fraction of oxygen consumed by the burner at full combustion.
S33, determining a theoretical air amount according to the ratio of oxygen in the air.
S4, calculating a primary air coefficient according to the ratio of the actual air quantity to the theoretical air quantity.
S5, evaluating the injection performance of the burner according to the primary air coefficient.
According to the method, the device and the system, the steady-state flow field simulation is carried out on the three-dimensional model according to the temperature boundary condition to obtain the actual air quantity, the injection performance of the burner of the gas stove is evaluated through the ratio of the actual air quantity to the theoretical air quantity, a chemical reaction equation is not involved, quantitative evaluation of the injection performance of the burner is achieved, and then the structure of the burner can be improved according to an evaluation result.
In an alternative embodiment, step S2 includes:
s21, performing steady-state flow field simulation on the three-dimensional model based on the turbulence model, the component transportation equation and the wall equation according to the temperature boundary condition.
Wherein the turbulence model may include a turbulence dissipation ratio transport equation (Realizable k-e); the component transport equation may include a convection-diffusion equation (Transport species); the wall equation includes a standard wall function (STANDARD WALL FN).
It should be noted that the turbulence model, the component transport equation, and the wall equation are not limited to the implementation of the above method.
In this embodiment, in order to close the basic control equation of the fluid dynamics and solve the basic control equation, a turbulence model is cooperatively used on the basis of the basic control equation (mass conservation, momentum conservation, energy conservation), so that the calculation accuracy is high, the application is simple, the calculation time is saved, and the method has universality. The component transport equation is used to calculate mass diffusion in laminar flow. Since the rate of deposition is controlled by the rate of diffusion of the fluid to the surface, a suitable wall equation is chosen for achieving a stable diffusion rate. In the embodiment, the three-dimensional model is subjected to steady-state flow field simulation based on the turbulence model, the component transportation equation and the wall equation, so that the calculation step is simpler, the calculation is more accurate, and the time for acquiring the actual air quantity is shorter.
In an alternative embodiment, step S5 includes:
And when the primary air coefficient is smaller than a first threshold value, evaluating that the injection performance of the burner is poor.
And when the primary air coefficient is larger than or equal to the first threshold value and smaller than the second threshold value, evaluating that the ejection performance of the burner is good.
And when the primary air coefficient is greater than or equal to the second threshold value, evaluating that the injection performance of the burner is excellent.
The first threshold and the second threshold can be set according to actual conditions, and it is to be noted that the first threshold is smaller than the second threshold.
In an alternative embodiment, when evaluating that the injection performance of the burner is poor, the method for evaluating the gas stove further comprises:
S6, acquiring a characteristic section speed cloud picture of the injection pipe of the gas stove according to a steady-state flow field simulation result.
S7, determining structural defects of the burner according to the characteristic section speed cloud picture of the injection pipe.
S8, updating the structure of the burner aiming at the structural defect. For example, if a back flow throat is seen in the velocity cloud image of the characteristic section of the ejector pipe, a convex structure can be added in the middle of the throat so as to achieve a drainage effect and solve the back flow problem.
In the present embodiment, the evaluation result of the injection performance of the current burner is obtained according to the primary air coefficient, so as to determine whether the structure of the gas stove needs to be updated or not. When the injection performance is evaluated to be poor, structural defects of the burner are determined according to the characteristic section speed cloud picture of the injection pipe, and the structure of the burner is updated according to the structural defects, so that the gas stove with better injection performance is obtained.
The method for evaluating a gas range using methane (CH 4) as a gas will be described.
The gas stove comprises upper air, outer injection, inner gas mixing, outer gas mixing, inner injection and liquid containing disc. Before calculating and analyzing the residual value of combustion of the gas stove, measuring and recording the wall temperature of the burner within the preset methane combustion time. The preset time period can be set according to practical situations, and in this example, the preset time period can be 15 minutes. The wall temperature comprises the wall temperature of an injection pipe of the gas stove, the wall temperature of a base, the wall temperature of a gas mixing chamber and the wall temperature of a fire cover.
And then constructing a three-dimensional model of the burner according to different combustion working conditions of the burner of the gas stove. The working conditions comprise upper air inlet and lower air inlet.
For example, when the gas burner is an upper inlet air, the air field of the gas burner is provided on the panel, the air inlets are provided around the air field, and the mixing field of the gas burner is the fluid enclosed by the burner wall.
For another example, when the gas stove is lower air intake, the air domain inlet of the gas stove is an air port corresponding to the air door, and the size of the air domain is determined according to the depth of the chassis and the layout of the chassis.
And (3) carrying out grid division on the fluid model, wherein the grid division generally follows the rule that large grids are arranged in a large area and small grids are arranged in a small area, and the grid size is matched with the actual structure size of the gas stove. In addition, the wall surface grid of the injection pipe of the gas stove is provided with a boundary layer, and the height of the first layer of grid is calculated according to the injection speed and the Reynolds number. And densifying the grids in the fire hole areas of the ejection core area and the fire cover to obtain a calculation unit for finite element analysis with higher precision. In this example, the number of grids is about 400 tens of thousands, with a grid quality of 0.12.
After 20 minutes of combustion, the residual convergence results of the gas burner with methane as the gas component were obtained on a high performance computing system (HPC system) using Realizable k-e (a turbulence model) and STANDARD WALL FN (a wall equation). Residual errors are the sum of fluxes of all surfaces of the gas stove after grid division, and the relative errors of physical quantities such as speed, mass, energy, turbulence parameters and the like are detected. Assume that the initial value of the physical quantity of the flow field of the gas stove is Q 0. Based on the initial value, the flow field is calculated according to a conservation equation to obtain a new physical flow field value Q 1. Then the residual is equal to |q 1-Q0|/Q1. The smaller the residual error, the better.
And after the simulation work is completed and the residual value is calculated, monitoring a first average molar mass fraction a of methane from the outlet plane of the injection pipe of the gas stove, and obtaining a characteristic section velocity cloud picture of the injection pipe.
Combustion reaction according to CmHn formula:
Since methane is CH4, then m=1, n=4, the theoretical amount of oxygen required for complete combustion of 1mol (mole) methane is:
And because the oxygen O 2 accounts for 21 percent in the air and the N 2 accounts for 79 percent in the air, so that the theoretical air amount required for complete combustion of 1mol (mole) methane is 2 +.21% = 9.52mol.
In addition, a first average molar mass fraction a of methane and a second average molar mass fraction bmol of oxygen were monitored from the outlet plane of the ejector tube of the gas range. Let the actual air quantity consumed be axmol. According to the law of conservation of atoms, the following identity can be obtained by taking into the general formula of the combustion reaction:
| CH4 | O2 | Air-conditioner | |
| Theoretical amount of | 1 | 2 | 9.52 |
| Actual amount of | a | b | ax |
According to the following formula:
The method can obtain the following steps:
To sum up, amolCH4 consumes an actual air quantity ax of 4.76bmol; the actual air quantity x consumed by 1molCH4 is 4.76b/amol.
Primary air coefficient calculation formula
The method can obtain the following steps:
When alpha is less than 0.60, the injection performance is poor, and the smoke exceeding (carbon monoxide CO discharged by combustion exceeds 500ppm (concentration unit) specified by national standard) is most likely to occur), huang Huo, and the improvement of the structure is required.
When the alpha is 0.60< alpha <0.70, the injection performance is good, and the efficiency and the smoke performance are stable.
When alpha is more than 0.70, the injection performance is excellent, but howling and tempering are most likely to occur.
Finally, the structure of the gas stove can be improved by combining the characteristic section speed cloud picture of the injection pipe, for example, the backflow is arranged on one side of the base far away from the injection pipe, the speed is low, and the structure of the gas stove can be improved in the direction of simplifying the base component.
Example 2
The present embodiment provides an evaluation system of a gas cooker, referring to fig. 2, the evaluation system of a gas cooker includes:
A construction module 1 for constructing a three-dimensional model of a burner of a gas range, and constructing a temperature boundary condition based on a measured temperature of an inner wall surface of the burner.
And the acquisition module 2 is used for carrying out steady-state flow field simulation on the three-dimensional model according to the temperature boundary condition so as to obtain the actual air quantity.
The actual air quantity is used for representing the capability of the nozzle of the burner to jet high-speed fuel gas and jet ambient air.
A determining module 3 for determining the theoretical air quantity. The theoretical air quantity is used for characterizing the air quantity determined according to the law of conservation of atoms in the complete combustion.
And the calculating module 4 is used for calculating the primary air coefficient according to the ratio of the actual air quantity to the theoretical air quantity.
And the evaluation module 5 is used for evaluating the injection performance of the burner according to the primary air coefficient.
In an alternative embodiment, the obtaining module 2 is further configured to perform steady-state flow field simulation on the three-dimensional model based on the turbulence model, the component transportation equation, and the wall equation according to the temperature boundary condition.
Wherein the turbulence model may include a turbulence dissipation ratio transport equation (Realizable k-e); the component transport equation may include a convection-diffusion equation (Transport species); the wall equation includes a standard wall function (STANDARD WALL FN).
In an alternative embodiment, the determining module 3 is further configured to obtain a first average molar mass fraction of the gas in the outlet plane of the ejector tube of the gas range.
The determining module 3 is further configured to determine a second average molar mass fraction according to the law of conservation of atoms. Wherein the second average molar mass fraction is used to characterize the average molar mass fraction of oxygen consumed by the burner at full combustion.
The determining module 3 is further configured to determine the theoretical air amount according to the ratio of oxygen in air.
In an alternative embodiment, the evaluation module 5 is further configured to evaluate that the injection performance of the burner is poor when the primary air coefficient is less than the first threshold; the method is also used for evaluating good injection performance of the burner when the primary air coefficient is larger than or equal to a first threshold value and smaller than a second threshold value; and the method is also used for evaluating the ejection performance of the burner when the primary air coefficient is larger than or equal to the second threshold value. Wherein the first threshold is less than the second threshold.
In an alternative embodiment, the obtaining module 2 is further configured to obtain a characteristic section velocity cloud image of the ejector tube of the gas stove according to the steady-state flow field simulation result.
And the determining module 3 is also used for determining the structural defect of the burner according to the characteristic section speed cloud picture of the injection pipe.
Referring to fig. 2, the evaluation system of the gas range further includes:
An updating module 6 for updating the structure of the burner for the structural defect.
It should be noted that, the implementation principle and the technical effect of each module of the evaluation system of the gas stove of the present embodiment may refer to the corresponding parts of embodiment 1, and are not described herein again.
Example 3
The embodiment provides an electronic device, and fig. 3 is a schematic block diagram of the electronic device. The electronic device includes a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the evaluation method of the gas cooker of embodiment 1 when executing the program. The electronic device 30 shown in fig. 3 is only an example and should not be construed as limiting the functionality and scope of use of embodiments of the present invention.
As shown in fig. 3, the electronic device 30 may be embodied in the form of a general purpose computing device, which may be a server device, for example. Components of electronic device 30 may include, but are not limited to: the at least one processor 31, the at least one memory 32, a bus 33 connecting the different system components, including the memory 32 and the processor 31.
The bus 33 includes a data bus, an address bus, and a control bus.
Memory 32 may include volatile memory such as Random Access Memory (RAM) 321 and/or cache memory 322, and may further include Read Only Memory (ROM) 323.
Memory 32 may also include a program/utility 325 having a set (at least one) of program modules 324, such program modules 324 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
The processor 31 executes a computer program stored in the memory 32 to thereby execute various functional applications and data processing, such as the evaluation method of the gas cooker of embodiment 1 of the present invention.
The electronic device 30 may also communicate with one or more external devices 34 (e.g., keyboard, pointing device, etc.). Such communication may be through an input/output (I/O) interface 35. Also, model-generating device 30 may also communicate with one or more networks, such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet, via network adapter 36. As shown in fig. 3, network adapter 36 communicates with the other modules of model-generating device 30 via bus 33. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in connection with the model-generating device 30, including, but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, data backup storage systems, and the like.
It should be noted that although several units/modules or sub-units/modules of an electronic device are mentioned in the above detailed description, such a division is merely exemplary and not mandatory. Indeed, the features and functionality of two or more units/modules described above may be embodied in one unit/module in accordance with embodiments of the present invention. Conversely, the features and functions of one unit/module described above may be further divided into ones that are embodied by a plurality of units/modules.
Example 4
The present embodiment provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the evaluation method of the gas cooker of embodiment 1.
More specifically, among others, readable storage media may be employed including, but not limited to: portable disk, hard disk, random access memory, read only memory, erasable programmable read only memory, optical storage device, magnetic storage device, or any suitable combination of the foregoing.
In a possible embodiment, the invention may also be realized in the form of a program product comprising program code for causing a terminal device to carry out the evaluation method of the gas burner of embodiment 1 when the program product is run on the terminal device.
Wherein the program code for carrying out the invention may be written in any combination of one or more programming languages, the program code may execute entirely on the user device, partly on the user device, as a stand-alone software package, partly on the user device, partly on a remote device or entirely on the remote device.
Example 5
The present embodiment provides a computer program product comprising a computer program which, when executed by a processor, implements the evaluation method of the gas cooker of embodiment 1.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (10)
1. A method of evaluating a gas range, the method comprising:
establishing a three-dimensional model of a burner of the gas stove, and constructing a temperature boundary condition based on the measured temperature of the inner wall surface of the burner;
Performing steady-state flow field simulation on the three-dimensional model according to the temperature boundary condition to obtain an actual air quantity; the actual air quantity is used for representing the capability of the nozzle of the burner for jetting high-speed fuel gas and injecting surrounding air;
determining a theoretical air quantity; wherein the theoretical air quantity is used for representing the air quantity determined according to the law of atomic conservation during complete combustion;
Calculating a primary air coefficient according to the ratio of the actual air quantity to the theoretical air quantity;
And evaluating the injection performance of the burner according to the primary air coefficient.
2. The method of evaluating a gas cooker according to claim 1, wherein said step of performing steady-state flow field simulation on said three-dimensional model according to said temperature boundary condition comprises:
And according to the temperature boundary conditions, performing steady-state flow field simulation on the three-dimensional model based on a turbulence model, a component transportation equation and a wall equation.
3. The method of evaluating a gas range according to claim 1, wherein the step of determining a theoretical air amount includes:
acquiring a first average molar mass fraction of the gas in the outlet plane of the injection pipe of the gas stove;
Determining a second average molar mass fraction according to the law of conservation of atoms; wherein the second average molar mass fraction is used to characterize an average molar mass fraction of oxygen consumed by the burner at the time of complete combustion;
The theoretical air quantity is determined according to the ratio of oxygen in the air.
4. The method of evaluating a gas cooker according to claim 2, wherein the turbulence model includes a turbulence dissipation ratio transport equation;
And/or the number of the groups of groups,
The component transport equation includes a convection-diffusion equation;
And/or the number of the groups of groups,
The wall equation includes a standard wall function.
5. The method of evaluating a gas range according to claim 1, wherein the step of evaluating injection performance of the burner based on the primary air coefficient comprises:
when the primary air coefficient is smaller than a first threshold value, evaluating that the injection performance of the burner is poor;
When the primary air coefficient is larger than or equal to the first threshold value and smaller than a second threshold value, evaluating that the ejection performance of the burner is good;
When the primary air coefficient is greater than or equal to the second threshold value, evaluating that the injection performance of the burner is excellent;
wherein the first threshold is less than the second threshold.
6. The method for evaluating a gas cooker according to claim 5, wherein when evaluating that the injection performance of the burner is poor, the method for evaluating a gas cooker further comprises:
acquiring a characteristic section speed cloud picture of an injection pipe of the gas stove according to a steady-state flow field simulation result;
Determining structural defects of the burner according to the characteristic section speed cloud picture of the injection pipe;
And updating the structure of the burner aiming at the structural defect.
7. An evaluation system of a gas cooker, characterized in that the evaluation system of a gas cooker comprises:
The building module is used for building a three-dimensional model of the burner of the gas stove and building a temperature boundary condition based on the measured temperature of the inner wall surface of the burner;
the acquisition module is used for carrying out steady-state flow field simulation on the three-dimensional model according to the temperature boundary condition so as to obtain the actual air quantity; the actual air quantity is used for representing the capability of the nozzle of the burner for jetting high-speed fuel gas and injecting surrounding air; a determining module for determining a theoretical air amount; wherein the theoretical air quantity is used for representing the air quantity determined according to the law of atomic conservation during complete combustion;
the calculation module is used for calculating a primary air coefficient according to the ratio of the actual air quantity to the theoretical air quantity;
and the evaluation module is used for evaluating the injection performance of the burner according to the primary air coefficient.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory for running on the processor, characterized in that the processor implements the evaluation method of a gas cooker according to any one of claims 1-6 when executing the computer program.
9. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the evaluation method of a gas cooker according to any one of claims 1 to 6.
10. A computer program product comprising a computer program, characterized in that the computer program, when executed by a processor, implements the evaluation method of a gas cooker according to any one of claims 1-6.
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| CN202410278269.XA CN118130136A (en) | 2024-03-12 | 2024-03-12 | Evaluation method and system of gas stove, electronic equipment, medium and product |
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| CN202410278269.XA CN118130136A (en) | 2024-03-12 | 2024-03-12 | Evaluation method and system of gas stove, electronic equipment, medium and product |
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| CN118130136A true CN118130136A (en) | 2024-06-04 |
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