A method and system for optimizing structural parameters of a plasma jet ignition device

Abstract

The application belongs to the technical field of ignition device structure parameter optimization, and discloses a structure parameter optimization method and system of a plasma jet ignition device, which comprises the following steps: establishing a jet model for describing the flow characteristics of the plasma jet, wherein the control equation of the jet model comprises a continuity equation, an N-S equation and a convection-diffusion equation; based on the jet model, a fluid model for describing the particle evolution law in the discharge process is constructed, wherein the control equation of the fluid model comprises the continuity equations of electrons, ions and neutral particles, an electron energy conservation equation and a Poisson equation; based on the fluid model, the structure parameters of the ignition device are simulated and analyzed; and according to the simulation analysis result, the structure parameters of the ignition device are optimized, so as to improve the plasma jet stability, the discharge efficiency and the ignition reliability of the ignition device.

Description

Technical Field

[0001] This invention belongs to the technical field of structural parameter optimization of ignition devices, and relates to a method and system for optimizing the structural parameters of a plasma jet ignition device. Background Technology

[0002] Methanol vehicles use methanol as their fuel, and the physicochemical properties of this fuel inherently limit cold starts at low temperatures: methanol has a high latent heat of vaporization; during engine startup, methanol vaporization absorbs heat, causing a sudden drop in engine temperature, which in turn leads to frost and ice formation, hindering fuel atomization and air-fuel mixture flow. At low temperatures, methanol's volatility decreases, making it difficult to form a combustible mixture, and the increased difficulty and energy requirement for ignition further exacerbate the cold start challenges. Existing engines mostly use traditional spark plugs for ignition, which suffer from low ignition energy, slow flame propagation, and incomplete combustion. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a method and system for optimizing the structural parameters of a plasma jet ignition device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: This invention provides a method for optimizing the structural parameters of a plasma jet ignition device, comprising the following steps: establishing a jet model to describe the flow characteristics of the plasma jet, wherein the governing equations of the jet model include the continuity equation, the Navier-Stokes equation, and the convection-diffusion equation; based on the jet model, constructing a fluid model to describe the particle evolution law during the discharge process, wherein the governing equations of the fluid model include the continuity equation for electrons, ions, and neutral particles, the electron energy conservation equation, and the Poisson equation; based on the fluid model, performing simulation analysis by adjusting the structural parameters of the discharge region; and optimizing the structural parameters of the discharge region according to the simulation analysis results to obtain the optimized jet model.

[0005] Furthermore, the jet model is a two-dimensional axisymmetric model; The continuity equation is:

[0006] The Navier-Stokes equation is:

[0007] The convection-diffusion equation:

[0008] in, For speed, The coefficient of dynamic viscosity, For temperature, For volume forces, For pressure, For density, The diffusion coefficient is... This represents the concentration of the substance.

[0009] Furthermore, the jet model uses the Reynolds number. Characterizing the fluid motion of a plasma jet; The Reynolds number for:

[0010] in, For density, The average velocity of the airflow. For characteristic length, is the dynamic viscosity coefficient of the gas.

[0011] Furthermore, the continuity equation for the electron is:

[0012] The continuity equation for the ion is:

[0013] The continuity equation for the neutral particle is:

[0014] in, For the concentration of electrons, For time, For the flux of electrons, For axial spatial coordinates, Collision sources with average electron energy density The concentration of particles, Let f be the flux of the particles. The collision source is the one with the average energy density of ions. The concentration of neutral particles, For the flux of neutral particles, It is a collision source with an average energy density of neutral particles.

[0015] Furthermore, the electron energy conservation equation is as follows:

[0016] in, For the concentration of electrons, The average energy of an electron. For time, The flux of electron energy. For axial spatial coordinates, The elementary charge, For the flux of electrons, The electric field intensity vector, The collisional source term represents the average energy density of electrons.

[0017] Furthermore, the Poisson equation is:

[0018] in, The electric field intensity vector, For density.

[0019] Furthermore, the structural parameters of the discharge region include the quartz tube radius, the spacing between the ring electrodes, and the electrode dimensions, wherein the electrode dimensions include the electrode length and the electrode thickness.

[0020] Furthermore, based on the fluid model, simulation analysis is performed by adjusting the structural parameters of the discharge region, including: using COMSOL multiphysics simulation software for simulation analysis, in which the particle flux and particle energy flux at the gas inlet and outlet are both zero.

[0021] Furthermore, the particle flux is zero:

[0022] The flux of the particle energy is zero.

[0023] in, For unit normal vector, This represents the particle flux of ions. This represents the flux of neutral particles.

[0024] This invention also provides a structural parameter optimization system for a plasma jet ignition device, comprising: a modeling module for establishing a jet model describing the flow characteristics of a plasma jet, wherein the governing equations of the jet model include the continuity equation, the Navier-Stokes equation, and the convection-diffusion equation; a construction module for constructing a fluid model describing the particle evolution during the discharge process based on the jet model, wherein the governing equations of the fluid model include the continuity equation for electrons, ions, and neutral particles, the electron energy conservation equation, and the Poisson equation; an analysis module for performing simulation analysis by adjusting the structural parameters of the discharge region based on the fluid model; and an optimization module for optimizing the structural parameters of the discharge region based on the simulation analysis results to obtain an optimized jet model.

[0025] Compared with the prior art, the present invention has the following beneficial technical effects: This invention discloses a method for optimizing the structural parameters of a plasma jet ignition device. First, a jet model is established to clarify the constraints of the continuity equation, Navier-Stokes equation, and convection-diffusion equation on the jet flow. Then, based on this jet model, a fluid model is constructed including the continuity equations for electrons, ions, and neutral particles, the electron energy conservation equation, and the Poisson equation. This captures the evolution of various particles during the discharge process, avoiding the limitations and errors of simulation analysis. Furthermore, the structural parameters of the ignition device are simulated and analyzed. Based on the influence of different structural parameters on the plasma jet characteristics, discharge performance, and ignition effect, the structural parameters of the ignition device are optimized according to the simulation results, thereby improving the plasma jet stability, discharge efficiency, and ignition reliability of the ignition device.

[0026] The COMSOL multiphysics simulation software was used to simulate and analyze the structural parameters of the ignition device. Boundary conditions were set such that the particle flux and particle energy flux at the gas inlet and outlet were both zero, thereby improving the accuracy and realism of the simulation analysis. Attached Figure Description

[0027] Figure 1 This is a flowchart of a method for optimizing the structural parameters of a plasma jet ignition device according to the present invention; Figure 2 This is a schematic diagram of streamer discharge in an embodiment of the present invention; Figure 3 This is a structural diagram of the coaxial double-ring plasma jet ignition device in an embodiment of the present invention; Figure 4 This is a graph showing the relationship between the inner radius of the quartz tube and the initial electric field strength in an embodiment of the present invention. Figure 5 This is a graph showing the relationship between the spacing between the ring electrodes and the initial electric field strength in an embodiment of the present invention. Figure 6 This is a structural diagram of the optimized jet ignition device in an embodiment of the present invention; Figure 7 This is a diagram showing the evolution of plasma electron density distribution at different times in an embodiment of the present invention; Figure 8 This is a diagram showing the evolution of plasma electric field intensity distribution at different times in an embodiment of the present invention. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0029] Example 1 A method for optimizing the structural parameters of a plasma jet ignition device includes the following steps: Figure 1 As shown, a jet model is established to describe the flow characteristics of the plasma jet. The governing equations of the jet model include the continuity equation, the Navier-Stokes equation, and the convection-diffusion equation. Based on the jet model, a fluid model is constructed to describe the particle evolution during the discharge process. The governing equations of the fluid model include the continuity equation for electrons, ions, and neutral particles, the electron energy conservation equation, and the Poisson equation. Based on the fluid model, the structural parameters of the ignition device are simulated and analyzed. Based on the simulation analysis results, the structural parameters of the ignition device are optimized.

[0030] In plasma jets, the fluid exists in two main states: laminar and turbulent. Plasma jets are more easily formed in a stable laminar environment, and the formed plasma exhibits good stability and is less prone to chemical reactions with other gaseous components in the environment. Therefore, for the plasma jet component, the following model assumptions are made: the jet model is always in a stable laminar flow state; and the interference of other gaseous components in the environment on the plasma jet is ignored.

[0031] The flow of gas within the ignition device, i.e., the engine, follows the laws of conservation of physical properties, specifically the laws of conservation of momentum, energy, and mass, which are described by mathematical governing equations. A two-dimensional axisymmetric model is used to numerically simulate the plasma jet, such as... Figure 3 As shown, the jet tube is made of quartz material, with the upper end as the inlet and the lower end as the outlet. The tube is 100mm long, with an inner radius of 1mm, an outer radius of 4mm, and a wall thickness of 1mm. Two annular electrodes are mounted on the outside of the tube wall: a high-voltage electrode at the top, 50mm from the outlet, and a grounding electrode at the bottom, 20mm from the outlet. Both electrodes have a cross-sectional dimension of 10mm in length and 2mm in width, and are spaced 10mm apart. An external region, 40mm long and 10mm wide, is located below the quartz tube to observe the morphological changes of the fluid after it flows out of the tube.

[0032] When studying the laminar flow characteristics of an atmospheric cryogenic plasma jet engine, the flow conditions of plasma in an argon environment are described using the continuity equation, Navier-Stokes equation, and convection-diffusion equation under laminar flow conditions.

[0033] The continuity equation is:

[0034] The Navier-Stokes equation is:

[0035] Convection-diffusion equation:

[0036] in, For speed, The coefficient of dynamic viscosity, For temperature, For volume forces, For pressure, For density, The diffusion coefficient is... This represents the concentration of the substance.

[0037] The jet model uses the Reynolds number. Characterizing the fluid motion of a plasma jet; Reynolds number for:

[0038] in, For density, The average velocity of the airflow. For characteristic length, is the dynamic viscosity coefficient of the gas.

[0039] The boundaries of the jet model are defined, including the inlet boundary, solid wall, axis of symmetry, and outlet boundary.

[0040] At the inlet boundary, the velocity vector of the fluid in the axial z-direction The velocity vector of the fluid in the radial direction (perpendicular to the z-direction) and temperature Depending on the spatial coordinates, i.e., the main flow direction of the plasma jet The distribution is given.

[0041] On a solid wall surface, , ,

[0042] On the axis of symmetry,

[0043] At the export border,

[0044] Ideally, the fluid is assumed to have no gradient change along the flow direction.

[0045] After argon gas is introduced into the discharge chamber (sealed structure) of the ignition device, the circuit switch is closed, applying a DC voltage V0 between the cathode and anode. Since the working gas is an insulating medium, as the applied voltage gradually increases, the insulation between the electrodes is broken, causing gas breakdown and plasma generation. The voltage at the moment the gas is about to break down is defined as the ignition voltage. The ignition voltage Follows Pastine's Law.

[0046]

[0047] in, Here, A represents an empirical constant related to the type of gas; B represents the frequency factor for the ionization of gas molecules by electron collisions; and C represents the energy threshold factor for the ionization process. This refers to gas pressure. The distance between the electrodes. is the ionization potential of the gas molecules.

[0048] Ignition voltage is determined solely by gas pressure Spacing between electrodes The product of the voltage and the breakdown voltage determines the voltage. To generate plasma from the gas through discharge, the applied driving voltage must be greater than the breakdown voltage.

[0049] When the driving voltage exceeds the breakdown voltage, the cathode in the ignition device's discharge chamber releases free electrons, which move towards the anode under the influence of an external electric field. When the electron kinetic energy increases to 15.8 eV, it collides with neutral gas molecules, rapidly ionizing into electrons and positive ions, forming an initial electron avalanche that continues to move towards the anode. The ionized positive ions, due to their much larger mass than electrons, remain almost stationary. Figure 2 As shown in Figure a. When the electron avalanche reaches the anode, the electron swarm is rapidly absorbed. The strong space charge electric field Er formed by the space charge within the avalanche causes severe distortion of the total electric field, thereby inducing spatial photoionization. A large number of photons released from the electron avalanche head generate photoelectrons during spatial photoionization. These photoelectrons, under the influence of the space charge electric field, form new small electron avalanches, such as... Figure 2 As shown in b, the small electron avalanche is attracted to and merges with the main electron avalanche, continuing its downward trajectory. Simultaneously, the previously emitted electrons and stationary positive ions rapidly neutralize, forming a quasi-neutral plasma near the anode, as shown in Figure b. Figure 2 As shown in c. The electron avalanche head continues to move downwards until it reaches the cathode, eventually forming a complete discharge channel, i.e., a streamer discharge, as shown in c. Figure 2 As shown in d.

[0050] To describe the evolution of various particles during discharge, the Poisson equations for mass, momentum, energy conservation, and electric field distribution are used. By constructing a fluid model, the continuity equation, energy equation, and Poisson equation are coupled and solved to reflect the macroscopic characteristics of plasma.

[0051] The continuity equation for electrons is:

[0052] The continuity equation for the ion is:

[0053] The continuity equation for the neutral particle:

[0054] in, For the concentration of electrons, For time, For the flux of electrons, For axial spatial coordinates, For collision sources with average electron energy density, The concentration of particles, This represents the particle flux of ions. The collision source is the one with the average energy density of ions. The concentration of neutral particles, For the flux of neutral particles, It is a collision source with an average energy density of neutral particles.

[0055] The electron energy conservation equation is:

[0056] in, For the concentration of electrons, The average energy of an electron. For time, The flux of electron energy. For axial spatial coordinates, The elementary charge, For the flux of electrons, The electric field intensity vector, The collisional source term represents the average energy density of electrons.

[0057] The Poisson equation is:

[0058] in, The electric field intensity vector, For density.

[0059]

[0060]

[0061] in, The concentration of particles, For ion mobility, The electric field intensity vector, The ion diffusion coefficient is... For axial spatial coordinates, For the concentration of electrons, For electron mobility, This represents the average energy of the electron.

[0062] Based on the fluid model, the structural parameters of the ignition device are simulated and analyzed, including: using COMSOL multiphysics simulation software for simulation analysis, in which the particle flux and particle energy flux at the gas inlet and outlet are both zero.

[0063] The particle flux is zero.

[0064] The flux of particle energy is zero.

[0065] in, For unit normal vector, This represents the particle flux of ions. This represents the flux of neutral particles.

[0066] Under the same voltage, the electric field layout and field strength region determine the ionization of argon gas. COMSOL (a multiphysics simulation software) was used to study the influence of the plasma device's structural parameters on the jet, and the parameters of the coaxial double-ring structure were optimized. Firstly, regarding electrode dimensions, as the electrode length and thickness increase, the charge on the dielectric surface also gradually increases, and the field strength also increases accordingly. Figure 4 As shown; regarding the discharge region, reducing the radius of the quartz tube or decreasing the spacing between the ring electrodes can significantly increase the initial electric field strength, such as... Figure 5 As shown. Based on the simulation results, the electron density and field strength during the main generation stage of the plasma jet from t=2.5μs to t=4.0μs were obtained, as follows. Figure 7 and Figure 8 Argon gas is introduced through the gas supply system from the inlet of the quartz jet tube at a flow rate of 0.8 m / s, forming a stable laminar flow. A voltage is applied by a high-voltage power supply, generating a strong electric field between the double-ring electrodes, which ionizes the argon molecules to form a plasma jet. The jet is ejected from the outlet and directly strikes the mixture in the combustion chamber of the ignition device. High-energy electrons and active particles trigger rapid ignition, and the flame nucleus expands rapidly.

[0067] The size of the discharge region indirectly affects the ionization of argon molecules. Based on the size of the discharge region, the structural parameters of the ignition device were optimized. The parameter adjustments are as follows: the radial inner radius of the quartz tube was adjusted from 3mm to 1mm, and the axial spacing between the ring electrodes was adjusted from 20mm to 10mm. The optimized structure is shown below. Figure 6 As shown.

[0068] Example 2 This invention discloses a structural parameter optimization system for a plasma jet ignition device, comprising: a modeling module for establishing a jet model describing the flow characteristics of a plasma jet, wherein the governing equations of the jet model include the continuity equation, the Navier-Stokes equation, and the convection-diffusion equation; a construction module for constructing a fluid model based on the jet model to describe the particle evolution during the discharge process, wherein the governing equations of the fluid model include the continuity equation for electrons, ions, and neutral particles, the electron energy conservation equation, and the Poisson equation; an analysis module for performing simulation analysis on the structural parameters of the ignition device based on the fluid model; and an optimization module for optimizing the structural parameters of the ignition device based on the simulation analysis results.

[0069] A structural parameter optimization system for a plasma jet ignition device can achieve the same steps as the above-described method embodiments, and will not be described in detail here.

[0070] Example 3 The present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the structural parameter optimization method for the plasma jet ignition device described in any of the above embodiments.

[0071] In another embodiment of the present invention, a terminal device is provided, comprising a processor and a memory. The memory stores a computer program, which includes program instructions. The processor executes the program instructions stored in the memory. The processor may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing and control core of the terminal, suitable for implementing one or more instructions, specifically suitable for loading and executing one or more instructions to achieve a corresponding method flow or corresponding function. The processor described in this embodiment of the present invention can implement the operation of the structural parameter optimization method for a plasma jet ignition device.

[0072] Example 4 The present invention also provides a computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the computer program implements the steps of the method for optimizing the structural parameters of the plasma jet ignition device as described in any of the above embodiments.

[0073] In another embodiment of the present invention, a storage medium is provided, specifically a computer-readable storage medium (Memory), which is a memory device in a terminal device used to store programs and data. It is understood that the computer-readable storage medium here can include both the built-in storage medium in the terminal device and extended storage media supported by the terminal device. The computer-readable storage medium provides storage space that stores the terminal's operating system. Furthermore, the storage space also stores one or more instructions suitable for loading and execution by a processor. These instructions can be one or more computer programs (including program code). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk storage device. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the corresponding steps of the structural parameter optimization method for the plasma jet ignition device in the above embodiments.

[0074] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0075] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0076] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0077] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0078] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

Claims

1. A method for optimizing the structural parameters of a plasma jet ignition device, characterized in that, Includes the following steps: A jet model is established to describe the flow characteristics of plasma jets. The governing equations of the jet model include the continuity equation, the Navier-Stokes equation, and the convection-diffusion equation. Based on the jet model, a fluid model is constructed to describe the particle evolution law during the discharge process. The governing equations of the fluid model include the continuity equations for electrons, ions and neutral particles, the electron energy conservation equation and the Poisson equation. Based on the fluid model, the structural parameters of the ignition device are simulated and analyzed. Based on the simulation analysis results, the structural parameters of the ignition device were optimized.

2. The method for optimizing the structural parameters of the plasma jet ignition device according to claim 1, characterized in that: The jet model is a two-dimensional axisymmetric model; The continuity equation is: The Navier-Stokes equation is: The convection-diffusion equation: in, For speed, The coefficient of dynamic viscosity, For temperature, For volume forces, For pressure, space charge density, Where is the diffusion coefficient. This represents the concentration of the substance.

3. The method for optimizing the structural parameters of the plasma jet ignition device according to claim 2, characterized in that: The jet model uses Reynolds number. Characterizing the fluid motion of a plasma jet; The Reynolds number for: in, For density, The average velocity of the airflow. For characteristic length, is the dynamic viscosity coefficient of the gas.

4. The method for optimizing the structural parameters of the plasma jet ignition device according to claim 1, characterized in that: The continuity equation for the electron is: The continuity equation for the ion is: The continuity equation for the neutral particle: in, For the concentration of electrons, For time, For the flux of electrons, For axial spatial coordinates, For collision sources with average electron energy density, The concentration of particles, Let f be the flux of the particles. The collision source is the one with the average energy density of ions. The concentration of neutral particles, For the flux of neutral particles, It is a collision source with an average energy density of neutral particles.

5. The method for optimizing the structural parameters of the plasma jet ignition device according to claim 4, characterized in that: The electron energy conservation equation is: in, For the concentration of electrons, The average energy of an electron. For time, The flux of electron energy. For axial spatial coordinates, The elementary charge, For the flux of electrons, The electric field intensity vector, The collisional source term represents the average energy density of electrons.

6. The method for optimizing the structural parameters of the plasma jet ignition device according to claim 1, characterized in that: The Poisson equation is: in, The electric field intensity vector, denoted as space charge density.

7. The method for optimizing the structural parameters of the plasma jet ignition device according to claim 1, characterized in that: The structural parameters of the discharge region include the radius of the quartz tube, the spacing between the ring electrodes, and the electrode dimensions, including the electrode length and the electrode thickness.

8. The method for optimizing the structural parameters of the plasma jet ignition device according to claim 1, characterized in that: Based on the fluid model, the structural parameters of the ignition device are simulated and analyzed, including: using COMSOL multiphysics simulation software for simulation analysis, in which the particle flux and particle energy flux at the gas inlet and outlet are both zero.

9. The method for optimizing the structural parameters of the plasma jet ignition device according to claim 8, characterized in that, include: The particle flux is zero: The flux of the particle energy is zero: in, For unit normal vector, This represents the particle flux of ions. This represents the flux of neutral particles.

10. A structural parameter optimization system for a plasma jet ignition device, characterized in that, include: Establishment module: Used to establish a jet model to describe the flow characteristics of plasma jets. The governing equations of the jet model include the continuity equation, the Navier-Stokes equation, and the convection-diffusion equation. The construction module is used to construct a fluid model based on the jet model to describe the evolution of particles during the discharge process. The governing equations of the fluid model include the continuity equations for electrons, ions and neutral particles, the electron energy conservation equation and the Poisson equation. Analysis module: Based on the fluid model, perform simulation analysis on the structural parameters of the ignition device; Optimization module: Used to optimize the structural parameters of the ignition device based on the results of simulation analysis.

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