Vehicle door drainage analysis method and device, storage medium, electronic equipment and vehicle

Abstract

The invention provides a vehicle door drainage analysis method and device, a storage medium, electronic equipment and a vehicle, and relates to the technical field of vehicle research and development, and the method comprises the steps: obtaining data of each part on a vehicle door of a target vehicle; the data of all the components are assembled according to the structure of the vehicle door to obtain vehicle door assembly data; creating a vehicle door assembly model corresponding to the vehicle door assembly data, wherein the vehicle door assembly model comprises a drainage system; preprocessing the vehicle door assembly model to obtain a vehicle door drainage model comprising a drainage system; and based on the vehicle door drainage model, simulating the drainage process of the drainage system when the target vehicle is rained, and obtaining a vehicle door drainage analysis result of the target vehicle. The vehicle door drainage model can be established, the vehicle door drainage process of the target vehicle is simulated, the vehicle door drainage analysis result is analyzed, problems are found and solved in the early stage of vehicle research and development, the development period is shortened, and the later test cost is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle research and development, and particularly to a door drainage analysis method, device, storage medium, electronic device and vehicle. Background Art

[0002] When a vehicle is running in the rain, rainwater will seep into the door cavity through gaps such as windows. To prevent water from accumulating or leaking into the passenger compartment in the door cavity, a door drainage system can be established to collect and guide the accumulated water out of the vehicle body, so as to avoid affecting driving safety and driving comfort.

[0003] Currently, the door drainage problem is mainly checked during the whole vehicle test of the actual vehicle. The door of the actual vehicle is tested and analyzed for drainage to determine whether the door drainage design can meet the requirements.

[0004] However, the whole vehicle test is at a relatively late stage of vehicle development. If it is found that the door drainage design is unreasonable at this stage, re-designing or updating the mold will increase the R & D cost. Summary of the Invention

[0005] In view of this, the present disclosure provides a door drainage analysis method, device, storage medium, electronic device and vehicle, which can establish a door drainage model, simulate the door drainage process of the target vehicle, analyze the door drainage analysis result, discover and solve problems in the early stage of vehicle R & D, shorten the development cycle and reduce the later test cost.

[0006] According to the first aspect of the present disclosure, a door drainage analysis method is provided, including:

[0007] Obtain the data of each component on the door of the target vehicle;

[0008] Assemble the data of each component according to the structure of the door to obtain the door assembly data;

[0009] Create a door assembly model corresponding to the door assembly data, and the door assembly model includes a drainage system;

[0010] Preprocess the door assembly model to obtain a door drainage model, wherein the preprocessing is used to provide the water inlet condition of the door when simulating the target vehicle in the rain;

[0011] Based on the door drainage model, simulate the drainage process of the drainage system when the target vehicle is in the rain to obtain the door drainage analysis result of the target vehicle.

[0012] According to the second aspect of the present disclosure, a door drainage analysis device is provided, including:

[0013] An acquisition module, configured to acquire various component data on the door of a target vehicle; assemble the various component data according to the structure of the door to obtain door assembly data;

[0014] A building module, configured to create a door assembly model corresponding to the door assembly data, wherein the door assembly model includes a drainage system; perform preprocessing on the door assembly model to obtain a door drainage model, where the preprocessing is used to provide the water inlet conditions of the door when simulating the target vehicle being rained on;

[0015] A simulation module, configured to simulate the drainage process of the drainage system when the target vehicle is rained on based on the door drainage model, and obtain the door drainage analysis result of the target vehicle.

[0016] According to a third aspect of the present disclosure, there is provided a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the door drainage analysis method described in the first aspect is implemented.

[0017] According to a fourth aspect of the present disclosure, there is provided an electronic device, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, and when the processor executes the computer program, the door drainage analysis method described in the first aspect is implemented.

[0018] According to a fifth aspect of the present disclosure, there is provided a vehicle, including: the electronic device described in the fourth aspect.

[0019] By means of the above technical solutions, a door drainage analysis method, device, storage medium, electronic device, and vehicle provided by the present disclosure, compared with the current method of real vehicle testing, can perform drainage test analysis on the door through a simulation analysis method. Specifically, it can first acquire various component data on the door of the target vehicle; then assemble the various component data according to the structure of the door to obtain door assembly data; then create a door assembly model corresponding to the door assembly data, where the door assembly model includes a drainage system; then perform preprocessing on the door assembly model to obtain a door drainage model, where the preprocessing is used to provide the water inlet conditions of the door when simulating the target vehicle being rained on; finally, based on the door drainage model, simulate the drainage process of the drainage system when the target vehicle is rained on, and obtain the door drainage analysis result of the target vehicle. The technical solutions in the present disclosure can establish a door drainage model, simulate the door drainage process of the target vehicle, analyze the door drainage analysis result, discover and solve problems in the early stage of vehicle development, shorten the development cycle, and reduce the later test cost.

[0020] The above description is only an overview of the technical solution of the present disclosure. In order to understand the technical means of the present disclosure more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present disclosure more obvious and understandable, the following specific embodiments of the present disclosure are given. Brief Description of the Drawings

[0021] The drawings herein are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic flowchart of a method for analyzing door drainage provided by an embodiment of the present disclosure;

[0024] Figure 2 It is a schematic flowchart of a method for analyzing door drainage provided by another embodiment of the present disclosure;

[0025] Figure 3 It is a schematic flowchart of a simulation analysis for door drainage analysis provided by an embodiment of the present disclosure;

[0026] Figure 4 It is a schematic diagram of the opening position of the water cut data for door drainage analysis provided by an embodiment of the present disclosure;

[0027] Figure 5 It is a schematic diagram of the data processing of the door handle for door drainage analysis provided by an embodiment of the present disclosure;

[0028] Figure 6 It is a layout position diagram of the flow source surface for door drainage analysis provided by an embodiment of the present disclosure;

[0029] Figure 7 It is a schematic structural diagram of a device for door drainage analysis provided by an embodiment of the present disclosure. Detailed Embodiments

[0030] The exemplary embodiments of the present disclosure will be described below in conjunction with the accompanying drawings. Various details of the embodiments of the present disclosure are helpful for understanding and should be considered merely exemplary. Therefore, those of ordinary skill in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, the descriptions of well-known functions and structures are omitted below. It should be noted that, without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0031] The door drainage analysis method, device, storage medium, electronic device and vehicle according to the embodiments of the present disclosure will be described below with reference to the accompanying drawings.

[0032] Currently, the door drainage problem is mainly checked during the whole vehicle test of the actual vehicle. However, the whole vehicle test is at a relatively late stage of vehicle development. If it is found that the door drainage design is unreasonable at this stage, re-designing or updating the mold will increase the R & D cost.

[0033] To solve the above technical problems, an embodiment of the present disclosure provides a door drainage analysis method. As Figure 1 shown, an embodiment of the present disclosure provides a door drainage analysis method, including:

[0034] Step 101, obtain the data of each component on the door of the target vehicle, and assemble the data of each component according to the structure of the door to obtain the door assembly data.

[0035] For this embodiment, the data of each component on the door of the target vehicle can be obtained through computer-aided design (CAD) software, converted into data in a preset format, and assembled according to the structure of the door to obtain the door assembly data. Among them, the CAD software can be used to simulate the structure of the door of the target vehicle and provide a more intuitive visual effect, and can include but not limited to AutoCAD; the door assembly data can be used to store the data of each component in the door of the target vehicle, and the door assembly can include but not limited to door sheet metal, door accessory assembly, door lower trim, side window glass, triangular window, rearview mirror, A-pillar and B-pillar trim, etc.; the preset format can be used to unify the format of the door assembly data and facilitate the construction of the door drainage model, and can include but not limited to CATPart, STP, Stereolithography (STL).

[0036] Step 102, create a door assembly model corresponding to the door assembly data, and preprocess the door assembly model to obtain a door drainage model.

[0037] Among them, the drainage system is included in the door assembly model.

[0038] Preprocess the door assembly model to provide the water inlet conditions of the door when simulating the target vehicle in the rain.

[0039] In a specific application scenario, the door assembly data of the target vehicle in a preset format can be imported into Computational Fluid Dynamics (CFD) software to create a door assembly model. Then, preprocess the door assembly model, set the simulation parameters, make the rainfall source surface cover the door water inlet gap, establish a door drainage model, and simulate the door drainage process under the rain scenario. Among them, CFD software can use the fast computing power of the computer to obtain an approximate solution of the fluid control equation, including but not limited to PreonLab. PreonLab can simulate the natural flow of liquid on the geometric surface by integrating drawing and various sensors, and support the visualization of simulation data, providing users with accurate and efficient simulation solutions.

[0040] Step 103: Based on the door drainage model, simulate the door drainage process of the drainage system when the target vehicle is in the rain to obtain the door drainage analysis result of the target vehicle.

[0041] As a possible implementation method, after setting the simulation time and solver of the door drainage model, the transient calculation of the door drainage model can be started. During the simulation process, monitor the drainage parameters that change with the calculation time. When the drainage parameters reach a stable state, based on the post-processing function of the CFD software, visualize the simulation results in the stable state, more clearly display the drainage process and the drainage states of each component in the door, and generate a door drainage report. By analyzing the data in the report, obtain the door drainage analysis result of the target vehicle. The door drainage analysis result can be used to analyze the door drainage efficiency and drainage path, facilitating the discovery and solution of problems in the early stage of vehicle development, shortening the development cycle, and reducing the later test cost.

[0042] In summary, for a door drainage analysis method according to this embodiment, compared with the current method of conducting in-vehicle tests, the present disclosure can perform drainage test analysis of the door through simulation analysis. Specifically, it can first obtain the data of each component on the door of the target vehicle; then assemble the data of each component according to the structure of the door to obtain the door assembly data; then create a door assembly model corresponding to the door assembly data, where the door assembly model includes a drainage system; then preprocess the door assembly model to obtain a door drainage model, where the preprocessing is used to provide the water inlet conditions of the door when simulating the target vehicle being rained on; finally, based on the door drainage model, simulate the drainage process of the drainage system when the target vehicle is rained on to obtain the door drainage analysis result of the target vehicle. The technical solution in the present disclosure can establish a door drainage model, simulate the door drainage process of the target vehicle, analyze the door drainage analysis result, discover and solve problems in the early stage of vehicle development, shorten the development cycle, and reduce the later test cost.

[0043] Further, as a refinement and extension of the above embodiment, in order to fully illustrate the specific implementation process of the method in this embodiment, this embodiment provides the specific method as shown in Figure 2 which includes:

[0044] Step 201: Obtain the data of each component on the door of the target vehicle, and assemble the data of each component according to the structure of the door to obtain the door assembly data.

[0045] For this embodiment, the specific implementation process can refer to the relevant description in step 101 of the embodiment, and will not be elaborated here.

[0046] Step 202: Create a door assembly model corresponding to the door assembly data.

[0047] Among them, the door assembly model includes a drainage system.

[0048] For the convenience of understanding the technical solution in the disclosure, here in combination with Figure 3 a complete description of the solution in the present disclosure is given. As a possible implementation manner, the door assembly data of the target vehicle can be extracted using CAD software, converted into the STL format, imported into CFD software to create a door assembly model corresponding to the target vehicle, then set boundary conditions, solvers, flow rates, restricted domains, and physical fields for the door assembly model, establish a door drainage model, solve using the solver, and then perform post-processing analysis to generate a report.

[0049] Step 203: Open the door water cut in the door assembly model according to a preset gap size, and / or adjust the size between the door handle housing and the door sheet metal in the door assembly model.

[0050] Among them, the opening treatment of the door water cut is used to provide the water inlet condition of the door water cut when simulating the target vehicle in the rain; the adjustment treatment of the door handle is used to provide the water inlet condition of the door handle when simulating the target vehicle in the rain.

[0051] Exemplarily, as Figure 4 shown, a 4-mm gap can be opened at the intersection of the A-pillar, B-pillar, and C-pillar of the door for the door water cut opening; as Figure 5 shown, the maximum gap between the outer shell of the door handle and the door sheet metal can be 4 mm, and the maximum surface difference between the outer shell of the door handle and the door sheet metal can be 2.5 mm.

[0052] Step 204: Mesh the geometric surfaces of the door drainage model and set the simulation parameters corresponding to the door drainage model after meshing.

[0053] For this embodiment, a preprocessing software can be used to mesh the geometric surfaces of the door drainage model and set the simulation parameters. Among them, the simulation parameters can be used to simulate the drainage process of the door drainage model, and can include but are not limited to the boundary conditions of the door drainage model, solid wall surface parameters, physical field parameters, restricted domain information, and door attitude information; the preprocessing software can implement advanced adaptive mesh generation, swept machining, and automatic trimming to improve the mesh quality and solution accuracy, and can include but are not limited to ansa.

[0054] Exemplarily, the solid wall surface parameters can be set to Solid solid wall, and the following settings can be made for meshing: the mesh type can be triangular mesh, the mesh size is controlled between 1 mm and 2 mm, the mesh skewness is less than 0.7, the mesh aspect ratio is less than 30, and the minimum orthogonal quality of the mesh is greater than 0.5.

[0055] For this embodiment, during the process of setting the simulation parameters of the door drainage model, it can be detected whether there are missing distortions on the geometric surfaces of the door drainage model; if there are missing distortions on the geometric surfaces of the door drainage model, geometric repair processing is performed on the geometric surfaces, and then the simulation parameters of the door drainage model after geometric repair processing are set; if there are no missing distortions on the geometric surfaces of the door drainage model, the simulation parameters of the door drainage model are directly set. Correspondingly, the steps of the embodiment can include: detecting whether there are missing distortions on the geometric surfaces of the door drainage model; if there are missing distortions on the geometric surfaces of the door drainage model, performing geometric repair processing on the geometric surfaces; meshing the door drainage model after geometric repair processing.

[0056] Optionally, the simulation parameters include: the boundary conditions of the door drainage model;

[0057] Set the boundary conditions corresponding to the door drainage model after mesh generation, including: setting the rainfall source parameters of the door drainage model, such that the rainfall source is arranged directly above the door drip rail and / or door handle, at a preset height, with the source surface water particle release speed being a preset speed, the source surface area covering the door drip rail and / or door handle, and the source surface tilting at a preset angle towards the glass and the door sheet metal side.

[0058] Among them, the rainfall source parameters can be used to enable the flow source surface area to cover the drip rail and the door handle, ensuring the water flow uniformity at the positions of the drip rail and the door handle. Exemplarily, as Figure 6 shown, the rainfall source parameters can be set as follows: the flow source selects the surface flow source AreaSource, the surface type selects the rectangular surface Retangle, the emission type selects continuous Continuous, the flow unit selects volumetric flow, and the specific flow value can be consistent with the rainfall amount required in the enhanced rain test of the enterprise standard water management test. The flow source is arranged directly above the drip rail and the door handle, with a Z - direction height of 100 - 150 mm from the drip rail, the source surface water particle release speed of 5 - 7 m / s, and the source surface tilting 45° towards the glass and the door sheet metal side, facilitating the water flow to adhere to the glass and the door and then flow down.

[0059] Further optionally, the simulation parameters further include: physical field parameters;

[0060] Set the physical field parameters corresponding to the door drainage model after mesh generation, including: setting the cohesion coefficient, adhesion coefficient, shear viscosity, and bulk viscosity of the rainfall source.

[0061] Among them, the physical field includes the liquid physical field and the solid physical field, and the physical field parameters can include but are not limited to the cohesion coefficient, adhesion coefficient, shear viscosity, bulk viscosity, roughness, friction coefficient, etc. Exemplarily, the physical field parameters can be set according to Table 1:

[0062] Table 1 Physical field settings

[0063]

[0064]

[0065] Further optionally, the simulation parameters further include: restricted domain information;

[0066] Set the restricted domain information corresponding to the door drainage model after mesh generation, including: setting the position boundaries of the restricted domain in the three dimensions of the X - direction, Y - direction, and Z - direction, which are used to restrict the calculation boundary of the water flow in the door.

[0067] Among them, the restricted domain information can be used to limit the computational boundary of water flow, prevent the water velocity from being too large under the action of gravity, which may lead to a slow calculation speed, and can include position boundaries in three dimensions: the X direction, the Y direction, and the Z direction. Exemplarily, in the X direction: the front boundary takes the X position where the front end of the car door is located, the rear boundary takes the X position where the rear end of the car door is located, and extends 200 mm; in the Y direction: the left and right boundaries take the maximum Y position of the car door sheet metal and extend 200 mm along the Y direction; in the Z direction: the upper boundary takes the Z position of the highest point of the side window glass, the lower boundary takes the Z position of the lowest end of the lower trim of the car door, and extends 200 mm downward.

[0068] In addition, in this embodiment, the simulation parameters further include: door attitude information;

[0069] Set the door attitude information corresponding to the door drainage model after mesh generation, including: setting the door attitude information of the door drainage model according to different parking position postures.

[0070] Among them, the door attitude is used to simulate the drainage effect in different door states, and can include the closed state, the fully open state, and the state from closed to open.

[0071] Step 205: Perform transient calculations on the door drainage model using a preset solver according to the simulation parameters, and monitor the drainage change curve of the drainage parameters with the calculation time during the transient calculation.

[0072] In a specific application scenario, the simulation time and the preset solver of the door drainage model can be set in CFD software, then perform transient calculations on the door drainage model, and monitor the drainage change curve of the drainage parameters with the calculation time during the transient calculation. Among them, the drainage parameters can be used to reflect the door drainage state during the simulation process, and can include the residuals of the solver, the CFL time step, and the drainage volume of the drain pipe; the simulation time is used to control the transient calculation time of the door drainage model and can be set to 10 s; the preset solver is used to solve the simulation results, and the rainwater solver PreonSolver can be selected, and the particle diameter D range can be set to 0.5 mm to 1 mm in the preset solver, the convergence condition judgment number (Courant Friedrichs Lewy, CFL) is 1, and the maximum time step is 0.0001 s.

[0073] Step 206: Analyze the door drainage analysis result of the target vehicle based on the monitoring result.

[0074] In a specific application scenario, a post-processing software can be used to visualize the drainage results and generate a door drainage report. The simulation results can be compared with the real test results. The drainage capacity of the simulation results can be judged by the door drainage time error and the door water inflow error, and the door drainage analysis results in the door drainage report can be determined to evaluate the drainage effect of the simulation model and the water encounter risks of each component.

[0075] Exemplarily, Table 2 and Table 3 are comparison tables of the real test data and the simulation test data of the door drainage time and the door water inflow of a certain vehicle model. The door drainage time error is within 5%, and the door water inflow error is within 10%, which proves that this simulation method can effectively predict the door drainage capacity. Correspondingly, the steps of the embodiment may include: generating a door drainage report based on the visualized drainage results of the door drainage model; determining the door drainage analysis results in the door drainage report.

[0076] Table 2 Comparison of the Door Drainage Time between the Test and the Simulation of the Sheet Metal Door of a Certain Vehicle Model

[0077] Position Test drainage time Simulation drainage time Front sheet metal door 25s 24s Rear sheet metal door 20s 19.5s

[0078] Table 3 Comparison between the Real Vehicle Door Water Inflow Test and the Simulation of a Certain Test Vehicle Model

[0079]

[0080] In some embodiments, step 206 may specifically include: analyzing the door drainage analysis results of the target vehicle based on the monitoring results, including: judging whether the first fluctuation amount of the drainage change curve of the residual error with the calculation time within the maximum time step period is within the first preset range; and judging whether the second fluctuation amount of the drainage change curve of the CFL time step with the calculation time within the maximum time step period is within the second preset range; and judging whether the third fluctuation amount of the drainage change curve of the drainage volume with the calculation time within the maximum time step period is within the third preset range; if the first fluctuation amount is within the first preset range, the second fluctuation amount is within the second preset range, and the third fluctuation amount is within the third preset range, it is determined that the door drainage model reaches a stable state; obtaining the simulation results corresponding to the door drainage model in the stable state; and performing post-processing on the simulation results to obtain the door drainage analysis results.

[0081] For this embodiment, during the transient calculation process, monitor the drainage change curve of the drainage parameters with the calculation time, determine whether the door drainage model reaches a stable state, and analyze the door drainage analysis result of the target vehicle through the monitoring results. Specifically, it is possible to determine whether the drainage change curve of the residual with the calculation time and the first fluctuation amount within the maximum time step period are within the first preset range; and, determine whether the drainage change curve of the CFL time step with the calculation time and the second fluctuation amount within the maximum time step period are within the second preset range; and, determine whether the drainage change curve of the drainage volume with the calculation time and the third fluctuation amount within the maximum time step period are within the third preset range; if the first fluctuation amount is within the first preset range, the second fluctuation amount is within the second preset range, and the third fluctuation amount is within the third preset range, then it is determined that the door drainage model reaches a stable state; obtain the simulation result corresponding to the door drainage model in the stable state; analyze the door drainage analysis result based on the simulation result.

[0082] Among them, the first fluctuation amount is the fluctuation amount of the solver residual, the second fluctuation amount is the fluctuation amount of the CFL time step, the third fluctuation amount is the fluctuation amount of the drainage volume of the drain pipe, the first preset range is the fluctuation amount range of the solver residual, which can be ±1%, the second preset range is the fluctuation amount range of the CFL time step, which can be ±1%, the third preset range is the fluctuation amount range of the drainage volume of the drain pipe, which can be ±2%, the maximum time step period can be 0.001s, and the simulation result can include but is not limited to the water flow path at the door lock, the water flow path at the limiter, the water flow path at the waterproof film, the water impact state of the window lifter motor, the balanced water level height of the water accumulation inside the door, and the drainage efficiency of the drain hole.

[0083] In summary, according to a door drainage analysis method provided by the present disclosure, the present disclosure can establish a door drainage model, simulate the door drainage process of the target vehicle, analyze the door drainage analysis result, discover and solve problems in the early stage of vehicle research and development, shorten the development cycle, and reduce the later test cost. In addition, it is possible to obtain the door drainage model in the stable state, visualize the drainage result, predict the door drainage efficiency and drainage path, evaluate the rationality of the door drain hole size, and estimate the water encounter risk of components such as the door lock and limiter.

[0084] Based on the above Figure 1 、 Figure 2 specific implementation of the method shown, this embodiment provides a door drainage analysis device, as Figure 7 shown, the device includes: an acquisition module 31, a building module 32, and a simulation module 33;

[0085] The acquisition module 31 can be used to acquire the data of each component on the door of the target vehicle; assemble the data of each component according to the structure of the door to obtain the door assembly data;

[0086] A building module 32, which can be used to create a door assembly model corresponding to the door assembly data. The door assembly model includes a drainage system. The door assembly model is preprocessed to obtain a door drainage model including the drainage system, where the preprocessing is used to provide the water inlet conditions of the door when simulating the target vehicle being rained on.

[0087] A simulation module 33, which can be used to simulate the drainage process of the drainage system when the target vehicle is rained on based on the door drainage model, and obtain the door drainage analysis result of the target vehicle.

[0088] In a specific application scenario, the building module 32 can be specifically used to open the door water deflector in the door assembly model according to a preset gap size. The opening process is used to provide the water inlet conditions of the door water deflector when simulating the target vehicle being rained on; and / or, adjust the size between the door handle housing and the door sheet metal in the door assembly model. The adjustment process is used to provide the water inlet conditions of the door handle when simulating the target vehicle being rained on.

[0089] In a specific application scenario, the simulation module 33 can be specifically used to mesh the geometric surfaces of the door drainage model and set the simulation parameters corresponding to the meshed door drainage model; perform transient calculations on the door drainage model using a preset solver according to the simulation parameters, and monitor the drainage change curve of the drainage parameters with the calculation time during the transient calculation. The drainage parameters include the residuals of the solver, the CFL time step, and the drainage volume of the drain pipe; analyze the door drainage analysis result of the target vehicle based on the monitoring results.

[0090] In a specific application scenario, the simulation module 33 can be specifically used to determine whether the first fluctuation amount of the drainage change curve of the residuals with the calculation time within the maximum time step period is within the first preset range; and, determine whether the second fluctuation amount of the drainage change curve of the CFL time step with the calculation time within the maximum time step period is within the second preset range; and, determine whether the third fluctuation amount of the drainage change curve of the drainage volume with the calculation time within the maximum time step period is within the third preset range; if the first fluctuation amount is within the first preset range, the second fluctuation amount is within the second preset range, and the third fluctuation amount is within the third preset range, then determine that the door drainage model reaches a stable state; obtain the simulation result corresponding to the door drainage model in the stable state; post-process the simulation result to obtain the door drainage analysis result.

[0091] In a specific application scenario, the simulation module 33 can be specifically used to set the boundary conditions corresponding to the door drainage model after mesh generation, including: setting the rainfall source parameters of the door drainage model, such that the rainfall source is arranged directly above the door water cut and / or the door handle, and the distance is a preset height, and the release speed of the water particle size on the source surface is a preset speed, and the source surface area covers the door water cut and / or the door handle, and the source surface is inclined at a preset angle towards the glass and the door sheet metal side.

[0092] In a specific application scenario, the simulation module 33 can also be specifically used to set the physical field parameters corresponding to the door drainage model after mesh generation, including: setting the cohesion coefficient, adhesion coefficient, shear viscosity, and bulk viscosity corresponding to the rainfall source.

[0093] In a specific application scenario, the simulation module 33 can also be specifically used to set the restricted domain information corresponding to the door drainage model after mesh generation, including: setting the position boundaries of the restricted domain in the three dimensions of the X direction, Y direction, and Z direction, for restricting the calculation boundary of the water flow in the door.

[0094] In a specific application scenario, the simulation module 33 can also be specifically used to set the door attitude information corresponding to the door drainage model after mesh generation, including: setting the door attitude information of the door drainage model according to different parking space position attitudes.

[0095] In a specific application scenario, the simulation module 33 can be specifically used to detect whether there are missing or distorted geometric surfaces in the door drainage model; if there are missing or distorted geometric surfaces in the door drainage model, geometric repair processing is performed on the geometric surfaces; mesh generation is performed on the door drainage model after geometric repair processing.

[0096] It should be noted that for other corresponding descriptions of each functional unit involved in a door drainage analysis device provided in this embodiment, reference can be made to Figure 1 and Figure 2 the corresponding descriptions therein, which will not be elaborated here.

[0097] Based on the above methods as Figure 1 and Figure 2 shown, correspondingly, this embodiment also provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the above methods as Figure 1 and Figure 2 shown are implemented.

[0098] Based on such understanding, the technical solution of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, a USB flash drive, a mobile hard disk, etc.), and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods in various implementation scenarios of the present disclosure.

[0099] Based on the above-mentioned method as Figure 1 and Figure 2 shown, and Figure 7 the virtual device embodiment shown, in order to achieve the above object, an embodiment of the present disclosure further provides an electronic device, which can be configured on the vehicle side (such as an electric vehicle). The device includes a storage medium and a processor; the storage medium is used for storing a computer program; the processor is used for executing the computer program to implement the method as Figure 1 and Figure 2 shown.

[0100] Optionally, the above-mentioned physical device may further include a user interface, a network interface, a camera, a radio frequency (RF) circuit, sensors, an audio circuit, a WI-FI module, and so on. The user interface may include a display screen (Display), an input unit such as a keyboard (Keyboard), etc. Optionally, the user interface may further include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), etc.

[0101] Those skilled in the art can understand that the above-mentioned physical device structure provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or combine some components, or have different component arrangements.

[0102] The storage medium may further include an operating system and a network communication module. The operating system is a program for managing the hardware and software resources of the above-mentioned physical device, and supports the operation of information processing programs and other software and / or programs. The network communication module is used to implement communication between components inside the storage medium, and communication with other hardware and software in the information processing physical device.

[0103] Based on the above-mentioned electronic device, an embodiment of the present disclosure further provides a vehicle, which specifically may include: the above-mentioned electronic device. The vehicle may specifically be an electric vehicle, etc.

[0104] Through the description of the above embodiments, those skilled in the art can clearly understand that the present disclosure can be implemented by means of software plus a necessary general hardware platform, or can also be implemented by hardware. The technical solution in this embodiment can establish a door drainage model, simulate the door drainage process of the target vehicle, analyze the door drainage analysis results, discover and solve problems in the early stage of vehicle development, shorten the development cycle, and reduce the later test cost. In addition, it is possible to obtain the door drainage model in a stable state, visualize the drainage results, predict the door drainage efficiency and drainage path, evaluate the rationality of the door drainage hole size, and estimate the water encounter risks of components such as door locks and limiters.

[0105] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0106] The above are only specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A door drainage analysis method, characterized in that: include: Obtain data of various components on the door of the target vehicle; Assembling the data of each component according to the structure of the vehicle door to obtain vehicle door assembly data; Creating a vehicle door assembly model corresponding to the vehicle door assembly data, wherein the vehicle door assembly model includes a drainage system; Preprocessing the door assembly model to obtain a door drainage model including the drainage system, wherein the preprocessing is used to provide a water ingress condition for the door when simulating rain on the target vehicle; Based on the door drainage model, the drainage process of the drainage system when the target vehicle is caught in rain is simulated to obtain the door drainage analysis result of the target vehicle.

2. The method according to claim 1, characterized in that The preprocessing of the door assembly model to obtain a door drainage model including the drainage system includes: The door water cut in the door assembly model is opened according to a preset gap size, and the opening processing is used to provide a water inlet condition for the door water cut when simulating the target vehicle being rained on; and / or, The dimensions between the door handle outer shell and the door sheet metal in the door assembly model are adjusted, and the adjustment is used to provide a water ingress condition for the door handle when simulating the target vehicle being caught in rain.

3. The method according to claim 2, characterized in that The method of simulating the drainage process of the drainage system when the target vehicle is exposed to rain based on the door drainage model to obtain the door drainage analysis result of the target vehicle includes: Meshing the geometric surface of the door drainage model, and setting simulation parameters corresponding to the meshed door drainage model; Using a preset solver to perform transient calculation of the door drainage model according to the simulation parameters, and monitoring a drainage change curve of drainage parameters over calculation time during the transient calculation process, wherein the drainage parameters include a residual error of the solver, a CFL time step, and a drainage volume of the drainage pipe; The door drainage analysis results of the target vehicle are analyzed based on the monitoring results.

4. The method according to claim 3, characterized in that The analyzing the door drainage analysis result of the target vehicle based on the monitoring result includes: Determine whether the drainage variation curve of the residual over the calculation time and the first fluctuation amount within the maximum time step period are within a first preset range; and, Determine whether the drainage variation curve of the CFL time step with the calculation time and the second fluctuation amount within the maximum time step period are within a second preset range; and, Determine whether the drainage variation curve of the drainage volume over the calculation time and the third fluctuation volume within the maximum time step period are within a third preset range; If the first fluctuation amount is within the first preset range, the second fluctuation amount is within the second preset range, and the third fluctuation amount is within the third preset range, it is determined that the door drainage model reaches a stable state; Obtaining a simulation result corresponding to the door drainage model in the stable state; The simulation results are post-processed to obtain the door drainage analysis results.

5. The method according to claim 3, characterized in that: The simulation parameters include: boundary conditions of the door drainage model; Set the boundary conditions corresponding to the door drainage model after meshing, including: The rainfall source parameters of the door drainage model are set so that the rainfall source is arranged directly above the door water cut and / or door handle, and the distance is a preset height, the source surface water source particle release speed is a preset speed, the source surface area covers the door water cut and / or door handle, and the source surface is inclined at a preset angle toward the glass and door sheet metal side.

6. The method according to claim 5, characterized in that The simulation parameters also include: physical field parameters; Set the physical field parameters corresponding to the door drainage model after meshing, including: The cohesion coefficient, adhesion coefficient, shear viscosity and volume viscosity corresponding to the rainfall source are set.

7. The method according to claim 6, characterized in that The simulation parameters also include: restricted domain information; Set the restricted domain information corresponding to the door drainage model after meshing, including: The restriction domain is set to correspond to the position boundaries in three dimensions, namely, X, Y, and Z, to limit the calculation boundaries of water flow in the car door.

8. The method according to claim 7, characterized in that The simulation parameters also include: door posture information; Set the door posture information corresponding to the door drainage model after meshing, including: According to different parking positions and postures, the door posture information of the door drainage model is set.

9. The method according to claim 3, characterized in that: The meshing of the geometric surface of the door drainage model includes: Detecting whether there is loss distortion on the geometric surface of the door drainage model; If there is loss or distortion in the geometric surface of the door drainage model, geometric repair processing is performed on the geometric surface; Mesh the door drainage model after geometry repair.

10. A door drainage analysis device, characterized in that: include: An acquisition module, used to acquire data of various components on the door of the target vehicle; Assembling the data of each component according to the structure of the vehicle door to obtain vehicle door assembly data; Establishing a module, used for creating a door assembly model corresponding to the door assembly data, wherein the door assembly model includes a drainage system; preprocessing the door assembly model to obtain a door drainage model including the drainage system, wherein the preprocessing is used for providing a water ingress condition of the door when simulating the target vehicle being caught in rain; The simulation module is used to simulate the drainage process of the drainage system when the target vehicle is rained on based on the door drainage model, so as to obtain the door drainage analysis result of the target vehicle.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 9 is implemented.

12. An electronic device comprising a storage medium, a processor, and a computer program stored in the storage medium and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 9 is implemented.

13. A vehicle, characterized in that: include: The electronic device as claimed in claim 12.

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