Vehicle brake disc temperature drop simulation method and device based on wheel rotation and medium

Abstract

This invention discloses a method, apparatus, and medium for simulating the temperature drop of a vehicle's brake disc based on wheel rotation. The method includes: acquiring data on the exterior components of a target vehicle model; determining a vehicle computational domain model based on this data; determining an independent fixed computational domain for the brake disc by independently dividing the brake disc area based on the vehicle computational domain model; and determining the simulation result of the vehicle's brake disc temperature drop by performing coupled simulation using a preset wheel rotation coordinate system and a preset rotation speed based on the independent fixed computational domain. This invention addresses the technical problems of existing brake disc temperature drop simulations lacking a vehicle-wide dimension and failing to consider wheel rotation, making it difficult to accurately simulate the flow field and temperature field and support the drag reduction design of wheel rim covers.

Description

Technical Field

[0001] This invention relates to the field of vehicle design technology, and more specifically, to a method, device, and storage medium for simulating the temperature drop of a vehicle brake disc based on wheel rotation. Background Technology

[0002] The demand for co-design of automotive aerodynamic drag optimization and braking system thermal management is increasing. The temperature drop performance of brake discs directly affects vehicle braking safety, component lifespan, and overall vehicle aerodynamic efficiency. Existing simulation analyses of brake disc temperature drop are mostly limited to simplified models of individual brake discs or local wheel edges, failing to fully integrate the complete vehicle exterior structure and the actual wheel rotation state. They also struggle to achieve multi-physics coupling simulation of the external flow field of the vehicle and the temperature field of the brake disc area, making it impossible to accurately reproduce the real laws of airflow and heat transfer around the brake disc under actual vehicle driving conditions. Furthermore, there is a lack of systematic simulation methods that can directly connect with the design optimization of vehicle exterior components such as wheel rim covers and support the co-design of drag reduction and brake heat dissipation. Real-world testing verification is time-consuming, costly, and cannot quickly achieve iterative verification of solutions in the early stages of design.

[0003] There is currently no effective solution to the above problems. Summary of the Invention

[0004] This invention provides a method, device, and storage medium for simulating the temperature drop of a vehicle brake disc based on wheel rotation, which at least solves the technical problems of existing brake disc temperature drop simulations lacking a whole-vehicle dimension and not considering wheel rotation, making it difficult to accurately simulate the flow field and temperature field and support the design of wheel rim cover drag reduction.

[0005] According to one aspect of the present invention, in order to achieve the above-mentioned objective, a method for simulating the temperature drop of a vehicle brake disc based on wheel rotation is provided, comprising: acquiring data of exterior components of a target vehicle model; determining a vehicle computational domain model based on the data of exterior components of the target vehicle model; determining an independent fixed computational domain for the brake disc by independently dividing the brake disc region based on the vehicle computational domain model; and determining the simulation result of the temperature drop of the vehicle brake disc by performing coupled simulation using a preset wheel rotation coordinate system and a preset rotation speed based on the independent fixed computational domain of the brake disc.

[0006] Furthermore, based on the independent fixed computational domain of the brake disc, a coupled simulation of the whole vehicle computational domain model is performed using a preset wheel rotation coordinate system and a preset rotation speed to determine the simulation results of the whole vehicle brake disc temperature drop. This includes: determining the coupling boundary of the contact surface between the independent fixed computational domain of the brake disc and the whole vehicle computational domain model based on the independent fixed computational domain of the brake disc; and determining the simulation results of the whole vehicle brake disc temperature drop based on the coupling boundary using a preset wheel rotation coordinate system and a preset rotation speed.

[0007] Furthermore, based on the coupling boundary, a coupled simulation is performed on the vehicle computational domain model using a preset wheel rotation coordinate system and a preset rotation speed to determine the simulation results of the vehicle brake disc temperature drop. This includes: based on the coupling boundary, a steady-state flow field simulation is performed on the vehicle computational domain model using a preset wheel rotation coordinate system and a preset rotation speed to determine the local convective heat transfer coefficient distribution and fluid temperature field cloud map on the brake disc surface; based on the local convective heat transfer coefficient distribution and fluid temperature field cloud map, a transient solid heat transfer simulation is performed on the solid computational domain model of the brake disc to determine the simulation results of the vehicle brake disc temperature drop.

[0008] Furthermore, before performing steady-state flow field simulation on the whole vehicle computational domain model, the following steps are also included: setting first physical condition parameters for the steady-state flow field, wherein the first physical condition parameters include at least: air, steady state, and incompressible turbulent flow.

[0009] Furthermore, before performing transient solid heat transfer simulation on the solid computational domain model of the brake disc, the following steps are also included: setting second physical condition parameters for the transient flow field, wherein the second physical condition parameters include at least: the physical model is transient, gray body thermal radiation and surface-to-surface thermal radiation.

[0010] Furthermore, before performing transient solid heat transfer simulation on the solid computational domain model of the brake disc, the following steps are also included: setting a third physical condition parameter for the solid computational domain model of the brake disc, wherein the third physical condition parameter includes at least: the physical model is solid, implicit unsteady state, and solid properties.

[0011] Furthermore, before performing steady-state flow field simulation on the whole vehicle computational domain model, the following steps are also taken: setting up a mesh refinement domain for the brake disc surface, the airflow channel between the rim cover and the wheel, the wheel spoke structure, and the bottom area of ​​the chassis.

[0012] Furthermore, based on the independent fixed computational domain of the brake disc, coupled simulation is performed using a preset wheel rotation coordinate system and a preset rotation speed. After determining the simulation results of the temperature drop of the whole vehicle brake disc, the method also includes: based on the simulation results of the temperature drop of the whole vehicle brake disc, obtaining the monitoring curve data of the temperature drop of the whole vehicle brake disc and the image data of the surface temperature of the brake disc by using preset average surface temperature and convective heat transfer coefficient of the brake disc.

[0013] According to one embodiment of the present invention, a vehicle brake disc temperature drop simulation device based on wheel rotation is also provided, comprising: an acquisition module for acquiring data of exterior components of a target vehicle model and determining a vehicle computational domain model based on the data of exterior components of the target vehicle model; a partitioning module for determining an independent fixed computational domain for the brake disc by independently partitioning the brake disc area based on the vehicle computational domain model; and a simulation module for determining the vehicle brake disc temperature drop simulation result by performing coupled simulation based on the independent fixed computational domain of the brake disc using a preset wheel rotation coordinate system and a preset rotation speed.

[0014] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored executable program, wherein, when the executable program is executed, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of the present invention.

[0015] In this embodiment of the invention, by constructing a whole-vehicle computational domain model based on data of the vehicle's exterior components, independently dividing the brake disc area into a fixed computational domain, and combining a preset wheel rotation coordinate system and rotational speed to achieve coupled simulation of the flow field and temperature field, the temperature drop variation law of the brake disc under wheel rotation conditions can be accurately reproduced in the whole-vehicle dimension. The simulation results obtained have a high degree of matching with the actual vehicle test results and reliable simulation accuracy. The brake disc temperature drop performance can be quickly and quantitatively evaluated in the early stage of design. It can effectively support the structural design optimization of components such as wheel rim covers without relying on a large number of actual vehicle tests, and successfully implement the whole-vehicle drag reduction design scheme. At the same time, it achieves the synergistic improvement of the vehicle's aerodynamic performance optimization and brake disc heat dissipation and temperature drop, significantly shortening the design verification cycle and reducing R&D test costs. Thus, it solves the technical problem that the existing brake disc temperature drop simulation lacks the whole-vehicle dimension and does not consider wheel rotation, making it difficult to accurately simulate the flow field and temperature field and support the drag reduction design of wheel rim covers. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a flowchart of a vehicle brake disc temperature drop simulation method based on wheel rotation according to one embodiment of the present invention;

[0018] Figure 2 This is a structural block diagram of a vehicle brake disc temperature drop simulation device based on wheel rotation, according to one embodiment of the present invention. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] According to an embodiment of the present invention, a simulation method for the temperature drop of a vehicle brake disc based on wheel rotation is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0022] This method embodiment can be executed in an electronic device or similar computing device that includes a memory and a processor. Taking operation on a vehicle terminal as an example, the vehicle terminal may include one or more processors (processors may include, but are not limited to, central processing units (CPUs), graphics processing units (GPUs), digital signal processing (DSP) chips, microcontroller units (MCUs), field-programmable gate arrays (FPGAs), neural network processors (NPUs), tensor processors (TPUs), artificial intelligence (AI) type processors, etc.) and a memory for storing data. Optionally, the vehicle terminal may also include transmission devices, input / output devices, and display devices for communication functions. Those skilled in the art will understand that the above structural description is merely illustrative and does not limit the structure of the vehicle terminal. For example, the vehicle terminal may include more or fewer components than described above, or have a different configuration than described above.

[0023] The memory can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the vehicle brake disc temperature drop simulation method based on wheel rotation in this embodiment of the invention. The processor executes various functional applications and data processing by running the computer program stored in the memory, thereby realizing the aforementioned vehicle brake disc temperature drop simulation method based on wheel rotation. The memory may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory may further include memory remotely located relative to the processor, and these remote memories can be connected to a mobile terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0024] The transmission device is used to receive or send data via a network. Specific examples of the network mentioned above may include a wireless network provided by the mobile terminal's communication provider. In one example, the transmission device includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device may be a Radio Frequency (RF) module, used for wireless communication with the Internet.

[0025] Display devices can be, for example, touchscreen liquid crystal displays (LCDs) and touch displays (also referred to as "touchscreens" or "touch displays"). The LCD allows users to interact with the user interface of the mobile terminal. In some embodiments, the mobile terminal has a graphical user interface (GUI), which allows users to interact with the GUI through finger contact and / or gestures on a touch-sensitive surface. Optional human-computer interaction functions include: creating web pages, drawing, word processing, creating electronic documents, playing games, video conferencing, instant messaging, sending and receiving emails, call interfaces, playing digital video, playing digital music, and / or web browsing, etc. Executable instructions for performing the above human-computer interaction functions are configured / stored in one or more processor-executable computer program products or readable storage media.

[0026] Figure 1 This is a flowchart of a vehicle brake disc temperature drop simulation method based on wheel rotation according to one embodiment of the present invention, as shown below. Figure 1 As shown, the method includes the following steps:

[0027] Step S110: Obtain the exterior component data of the target vehicle model. Based on the exterior component data of the target vehicle model, determine the computational domain model of the whole vehicle. The specific content is as follows:

[0028] In step S110, the three-dimensional geometric data of the visible external components of the target vehicle are first acquired. Interior structures that do not participate in external airflow heat exchange, such as interior trim, seats, and dashboards, are removed. Only exterior components that affect the external airflow and heat dissipation of the vehicle, such as body panels, chassis structure, wheels, brake discs, wheel covers, and exposed suspension components, are retained. The filtered geometric data is then imported into simulation software. An external computational domain for the entire vehicle is established according to the actual driving environment of the vehicle. The range of the computational domain is set according to industry-standard simulation criteria to ensure sufficient space in front, rear, sides, and top to realistically reproduce the development of the external airflow and heat dissipation boundary conditions during vehicle operation.

[0029] During the construction of the vehicle computational domain model, the imported exterior component geometry underwent surface mesh generation and quality checks. Strict control was maintained over the surface mesh to ensure it was free of perforations, unclosed regions, negative volumes, and distorted elements. Simultaneously, the proximity values ​​between adjacent component surface meshes were ensured to meet simulation requirements, preventing flow field divergence or temperature field distortion due to mesh defects. Based on the qualified surface mesh and external flow field space, the vehicle computational domain model was encapsulated and its boundaries defined. This enabled the model to fully support subsequent multi-physics coupled calculations such as wheel rotation, flow field calculations, heat radiation transfer, and brake disc solid heat transfer, resulting in a vehicle computational domain model that meets both simulation accuracy and engineering application requirements.

[0030] Step S120: Based on the vehicle computational domain model, the brake disc area is independently divided to determine the independent fixed computational domain of the brake disc.

[0031] In step S120, after completing the construction of the vehicle computational domain model and the surface mesh quality verification, the brake disc component inside the model is divided into independent regions based on the vehicle computational domain model. In the simulation software environment, the brake disc is extracted from the vehicle fluid domain and a dedicated computational space is defined, so that the region where the brake disc is located is geometrically separated from the main vehicle computational domain, forming a computational structure that is spatially independent and can be precisely connected at the boundary, thereby determining the independent fixed computational domain of the brake disc.

[0032] To achieve data transfer and physical field coupling between the independent fixed computational domain of the brake disc and the main computational domain of the vehicle, the interface between the two domains is uniformly named and coupled during the partitioning process. The outer surface of the independent fixed computational domain of the brake disc and the surface of the corresponding brake disc mounting position in the vehicle computational domain model are defined as the interface, ensuring that flow field information, heat transfer parameters, and temperature data can be stably transmitted between the two computational domains without flow loss, heat abrupt changes, or data discontinuity.

[0033] The independent fixed computational domain for the brake disc is constructed in a fixed domain form, remaining static and unchanging with wheel rotation. It receives real-time fluid parameters and thermal boundary conditions from the rotating flow field of the entire vehicle only through the interface, providing a stable, independent, and dedicated computational platform for subsequent simulations of brake disc solid-state heat transfer, temperature field evolution, and heat radiation exchange. This independent fixed computational domain effectively improves the accuracy of the brake disc temperature field solution, avoids the impact of complex flow field interference from the entire vehicle on local heat dissipation calculations, and provides a reliable simulation basis for balancing rim cover drag optimization and brake disc cooling performance.

[0034] Step S140: Based on the independent fixed computational domain of the brake disc, coupled simulation is performed using a preset wheel rotation coordinate system and a preset rotation speed to determine the simulation results of the temperature drop of the whole vehicle brake disc.

[0035] In step S140, after completing the division of the independent fixed computational domain of the brake disc and defining the interface coupling boundary, this embodiment uses the multi-reference frame (MRF) method based on this independent fixed computational domain to simulate the wheel rotation condition, laying a realistic motion boundary foundation for subsequent flow field-temperature field coupled simulation. In the simulation software, a separate rotating coordinate system is established for each wheel, with the origin of the rotating coordinate system coinciding with the center of the wheel hub, and the rotation axis consistent with the actual rotation axis of the wheel, ensuring that the coordinate system setting is completely matched with the actual driving state of the vehicle. The preset rotational speed of the wheel is accurately calculated based on the vehicle speed and wheel rolling diameter of the target vehicle model under simulation conditions. The calculation formula is that the rotational angular velocity is equal to the vehicle speed divided by the wheel rolling radius, thereby simulating the disturbance effect of wheel rotation on the surrounding flow field at different driving speeds, avoiding the flow field distortion problem caused by traditional fixed wheel simulation methods, and making the simulation results closer to the actual airflow state during actual vehicle operation.

[0036] After setting the wheel rotation coordinate system and rotation speed, a steady-state flow field simulation is first performed on the vehicle computational domain model to obtain the basic flow field and heat transfer boundary conditions on the brake disc surface. In this embodiment, the physical condition parameters of the steady-state flow field are set as air medium, steady-state flow mode, and incompressible turbulent flow model. At the same time, a mesh refinement domain is set for key areas such as the brake disc surface, the airflow channel between the rim cover and the wheel, the wheel spoke structure, and the bottom of the chassis to improve the calculation accuracy of the local flow field. After generating a volume mesh that meets the quality requirements, the steady-state calculation is started, and the calculation residual curve is continuously monitored. When the residuals of each physical quantity decrease to a preset threshold and remain stable, and the aerodynamic drag coefficient of the vehicle no longer fluctuates significantly, the steady-state flow field calculation is stopped and the results are saved. The results obtained at this time include the local convective heat transfer coefficient distribution cloud map of the brake disc surface, the external fluid temperature field distribution of the vehicle, and the airflow velocity vector distribution of each region. These results will serve as the core input conditions for subsequent transient heat transfer simulation.

[0037] The calculation results are initialized using steady-state flow field calculations as initial conditions. Fluid velocity, pressure, and temperature parameters obtained from the steady-state flow field are mapped to the transient computational domain, thereby shortening the computation cycle of the transient simulation and improving computational stability. Subsequently, the physical model is switched from steady-state to transient mode. The physical condition parameters of the transient flow field are set as implicit indeterminate time step, gray-body thermal radiation model, and surface-to-surface thermal radiation model, fully considering the thermal radiation heat transfer between the brake disc and the surrounding environment, compensating for the insufficient accuracy of traditional simulation methods that only consider convective heat transfer. Simultaneously, solid-state physical conditions are set for the independent fixed computational domain of the brake disc. Its physical model is defined as a solid, implicit unsteady-state heat transfer mode, and the density, specific heat capacity, thermal conductivity, and initial simulation temperature of the brake disc material are input into the solid properties. The initial temperature can be set according to the initial temperature of the brake disc after a real vehicle braking test, ensuring that the initial simulation conditions are consistent with actual operating conditions.

[0038] Before initiating the transient coupled simulation, simulation monitoring and output parameters are pre-set. Monitoring reports are created for the average surface temperature of the brake disc and the average convective heat transfer coefficient of the brake disc surface, and real-time monitoring curves are generated to allow for real-time assessment of the simulation's progress. Simultaneously, the output path, trigger conditions, and output frequency of the instantaneous temperature field image of the brake disc surface are configured. The image of the brake disc surface temperature distribution is automatically saved at specific time intervals after the simulation begins, facilitating subsequent analysis of temperature changes at different times. The calculation cutoff conditions for the transient simulation are set, including the maximum number of internal iterations, the maximum physical calculation time, and the maximum calculation step size, ensuring that the calculation process is completed within a reasonable timeframe and that the calculation accuracy meets engineering requirements. Click to run the flow field-temperature field coupled simulation calculation. After the calculation reaches the preset cutoff condition, stop the calculation and save all results. The final simulation results of the whole vehicle brake disc temperature drop include the curve of the average temperature of the brake disc surface changing with time, the temperature field distribution cloud map of the brake disc surface at different times, and the convective heat transfer coefficient change data of each region of the brake disc. The results can accurately reflect the temperature drop characteristics of the whole vehicle brake disc under the wheel rotation condition, and provide reliable data support for the wind resistance optimization design of the rim cover and the evaluation of the brake disc cooling performance.

[0039] Based on steps S110 to S140 above, in this embodiment of the invention, by constructing a whole vehicle computational domain model based on data of the vehicle's exterior components, independently dividing the brake disc area into a fixed computational domain, and combining a preset wheel rotation coordinate system and rotational speed to achieve coupled simulation of the flow field and temperature field, the temperature drop variation law of the brake disc under wheel rotation conditions can be accurately reproduced in the whole vehicle dimension. The simulation results obtained have a high degree of matching with the actual vehicle test results and reliable simulation accuracy. The temperature drop performance of the brake disc can be quickly and quantitatively evaluated in the early stage of design. It can effectively support the structural design optimization of components such as wheel rim covers without relying on a large number of actual vehicle tests, and successfully implement the whole vehicle drag reduction design scheme. At the same time, it achieves the synergistic improvement of the whole vehicle aerodynamic performance optimization and the brake disc heat dissipation temperature drop, which greatly shortens the design verification cycle and reduces the R&D test cost. Thus, it solves the technical problem that the existing brake disc temperature drop simulation lacks the whole vehicle dimension and does not consider wheel rotation, making it difficult to accurately simulate the flow field and temperature field and support the drag reduction design of wheel rim covers.

[0040] The vehicle brake disc temperature drop simulation method based on wheel rotation in embodiments of the present invention, based on an independent fixed computational domain of the brake disc, performs coupled simulation on the vehicle computational domain model through a preset wheel rotation coordinate system and a preset rotation speed to determine the vehicle brake disc temperature drop simulation results. This includes: determining the coupling boundary of the contact surface between the independent fixed computational domain of the brake disc and the vehicle computational domain model based on the independent fixed computational domain of the brake disc; and performing coupled simulation based on the coupling boundary through a preset wheel rotation coordinate system and a preset rotation speed to determine the vehicle brake disc temperature drop simulation results. This achieves coupled simulation of the flow field and temperature field in the whole vehicle dimension, solving the problem of insufficient accuracy in traditional component-level simulation and fixed convection heat transfer coefficient methods. It can accurately reflect the temperature drop characteristics of the brake disc under actual vehicle operation conditions, providing reliable data support for the balanced optimization of rim cover drag reduction and brake disc cooling performance in pure electric vehicles.

[0041] Furthermore, based on the coupling boundary, a coupled simulation is performed on the vehicle computational domain model using a preset wheel rotation coordinate system and a preset rotation speed to determine the simulation results of the vehicle brake disc temperature drop. This includes: based on the coupling boundary, a steady-state flow field simulation is performed on the vehicle computational domain model using a preset wheel rotation coordinate system and a preset rotation speed to determine the local convective heat transfer coefficient distribution and fluid temperature field cloud map on the brake disc surface; based on the local convective heat transfer coefficient distribution and fluid temperature field cloud map, a transient solid heat transfer simulation is performed on the solid computational domain model of the brake disc to determine the simulation results of the vehicle brake disc temperature drop. This allows for accurate acquisition of the true local convective heat transfer coefficient and temperature field distribution of the brake disc, significantly improving the accuracy and engineering reliability of the temperature drop simulation.

[0042] Furthermore, before performing steady-state flow field simulation on the vehicle computational domain model, the following steps are taken: setting first physical condition parameters for the steady-state flow field. These first physical condition parameters include at least: air, steady state, and incompressible turbulent flow. This provides a physical field basis that matches the actual vehicle driving environment for subsequent flow field calculations, ensuring the stability and accuracy of the simulation.

[0043] Furthermore, before performing transient solid heat transfer simulation on the solid computational domain model of the brake disc, the following steps are also taken: setting second physical condition parameters for the transient flow field. The second physical condition parameters include at least the following: the physical model is transient, gray body thermal radiation and surface-to-surface thermal radiation, so as to fully restore the heat exchange environment of the brake disc in actual operation and improve the accuracy of temperature field simulation.

[0044] Furthermore, before performing transient solid-state heat transfer simulation on the solid-state computational domain model of the brake disc, the process includes setting a third physical condition parameter for the solid-state computational domain model of the brake disc. This third physical condition parameter includes at least the following: the physical model is a solid, implicitly unsteady, and possesses solid-state properties. This provides an accurate and reliable solid-state heat transfer solution basis for calculating the brake disc temperature field.

[0045] Furthermore, before performing steady-state flow field simulation on the whole vehicle computational domain model, the following steps are taken: setting up a mesh refinement domain for the brake disc surface, the airflow channel between the rim cover and the wheel, the wheel spoke structure, and the bottom area of ​​the chassis, in order to improve the accuracy of local flow field and heat transfer calculations and ensure that the simulation results are closer to the actual state of the real vehicle.

[0046] Furthermore, based on the independent fixed computational domain of the brake disc, coupled simulation is performed using a preset wheel rotation coordinate system and a preset rotation speed. After determining the simulation results of the temperature drop of the whole vehicle brake disc, the method also includes: based on the simulation results of the temperature drop of the whole vehicle brake disc, the average surface temperature and convective heat transfer coefficient of the brake disc are preset to obtain the temperature drop monitoring curve data and the surface temperature image data of the brake disc, which facilitates intuitive viewing and quantitative evaluation of the temperature drop change law of the brake disc.

[0047] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods according to the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0048] This invention also provides a vehicle brake disc temperature drop simulation device based on wheel rotation. This device is used to implement the above embodiments and preferred embodiments, and will not be repeated as already described. As used below, the term "module" can be a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0049] Figure 2 According to one embodiment of the present invention, a vehicle brake disc temperature drop simulation device based on wheel rotation includes:

[0050] The acquisition module 201 is used to acquire the exterior component data of the target vehicle model and determine the vehicle computational domain model based on the exterior component data of the target vehicle model.

[0051] The partitioning module 202 is used to determine the independent fixed computational domain of the brake disc by independently partitioning the brake disc area based on the whole vehicle computational domain model.

[0052] Simulation module 203 is used to perform coupled simulation based on the independent fixed calculation domain of the brake disc, through a preset coordinate system and preset rotation speed of the wheel rotation, to determine the simulation results of the temperature drop of the whole vehicle brake disc.

[0053] It should be noted that the above modules can be implemented by software or hardware. For the latter, they can be implemented in the following ways, but are not limited to: all the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0054] According to one embodiment of the present invention, an electronic device is also provided, comprising: a memory storing an executable program; and a processor for running the program, wherein the program executes the above-described simulation method for temperature drop of the whole vehicle brake disc based on wheel rotation during runtime.

[0055] Optionally, in this embodiment, the processor can be configured to perform the following steps via a computer program:

[0056] Step S1: Obtain the exterior component data of the target vehicle model, and determine the vehicle computational domain model based on the exterior component data of the target vehicle model.

[0057] Step S2: Based on the vehicle computational domain model, the brake disc region is independently divided to determine the independent fixed computational domain of the brake disc.

[0058] Step S3: Based on the independent fixed computational domain of the brake disc, coupled simulation is performed using a preset wheel rotation coordinate system and a preset rotation speed to determine the simulation results of the temperature drop of the whole vehicle brake disc.

[0059] According to one embodiment of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored executable program, wherein, when the executable program is running, it controls the device where the storage medium is located to execute the above-described simulation method for the temperature drop of the whole vehicle brake disc based on wheel rotation.

[0060] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0061] Step S1: Obtain the exterior component data of the target vehicle model, and determine the vehicle computational domain model based on the exterior component data of the target vehicle model.

[0062] Step S2: Based on the vehicle computational domain model, the brake disc region is independently divided to determine the independent fixed computational domain of the brake disc.

[0063] Step S3: Based on the independent fixed computational domain of the brake disc, coupled simulation is performed using a preset wheel rotation coordinate system and a preset rotation speed to determine the simulation results of the temperature drop of the whole vehicle brake disc.

[0064] Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing computer programs, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0065] According to one embodiment of the present invention, a computer program product is also provided, including a computer program that, when executed by a processor, implements the above-described simulation method for the temperature drop of the whole vehicle brake disc based on wheel rotation.

[0066] Optionally, in this embodiment, the above-mentioned computer program product can be configured as a computer program that performs the following steps:

[0067] Step S1: Obtain the exterior component data of the target vehicle model, and determine the vehicle computational domain model based on the exterior component data of the target vehicle model.

[0068] Step S2: Based on the vehicle computational domain model, the brake disc region is independently divided to determine the independent fixed computational domain of the brake disc.

[0069] Step S3: Based on the independent fixed computational domain of the brake disc, coupled simulation is performed using a preset wheel rotation coordinate system and a preset rotation speed to determine the simulation results of the temperature drop of the whole vehicle brake disc.

[0070] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0071] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0072] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between units or modules may be electrical or other forms.

[0073] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0074] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0075] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0076] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A simulation method for temperature drop of a vehicle brake disc based on wheel rotation, characterized in that, include: Obtain the exterior component data of the target vehicle model, and determine the vehicle computational domain model based on the exterior component data of the target vehicle model; Based on the vehicle computational domain model, the brake disc region is independently divided to determine the independent fixed computational domain of the brake disc. Based on the independent fixed computational domain of the brake disc, coupled simulation is performed using a preset wheel rotation coordinate system and a preset rotation speed to determine the simulation results of the temperature drop of the vehicle's brake disc.

2. The simulation method for temperature drop of the whole vehicle brake disc based on wheel rotation according to claim 1, characterized in that, Based on the independent fixed computational domain of the brake disc, the vehicle computational domain model is coupled and simulated using the preset wheel rotation coordinate system and the preset rotation speed to determine the simulation results of the vehicle brake disc temperature drop, including: Based on the independent fixed computational domain of the brake disc, the coupling boundary of the contact surface between the independent fixed computational domain of the brake disc and the vehicle computational domain model is determined; Based on the coupling boundary, a coupled simulation is performed using the preset wheel rotation coordinate system and the preset rotation speed to determine the simulation results of the temperature drop of the vehicle brake disc.

3. The simulation method for temperature drop of the whole vehicle brake disc based on wheel rotation according to claim 2, characterized in that, Based on the coupling boundary, the vehicle computational domain model is coupled and simulated using the preset wheel rotation coordinate system and the preset rotation speed to determine the simulation results of the vehicle brake disc temperature drop, including: Based on the coupling boundary, the steady-state flow field simulation of the whole vehicle computational domain model is performed through the preset wheel rotation coordinate system and the preset rotation speed to determine the local convective heat transfer coefficient distribution and fluid temperature field cloud map on the brake disc surface. Based on the local convective heat transfer coefficient distribution and the fluid temperature field cloud map, transient solid heat transfer simulation is performed on the solid computational domain model of the brake disc to determine the simulation results of the temperature drop of the whole vehicle brake disc.

4. The simulation method for temperature drop of the whole vehicle brake disc based on wheel rotation according to claim 3, characterized in that, Before performing steady-state flow field simulation on the whole vehicle computational domain model, the following steps are also included: A first physical condition parameter is set for the steady-state flow field, wherein the first physical condition parameter includes at least: air, steady state, and incompressible turbulent flow.

5. The simulation method for temperature drop of the whole vehicle brake disc based on wheel rotation according to claim 3, characterized in that, Before performing transient solid heat transfer simulation on the solid computational domain model of the brake disc, the following steps are also included: A second physical condition parameter is set for the transient flow field, wherein the second physical condition parameter includes at least the following: the physical model is transient, gray body thermal radiation and surface-to-surface thermal radiation.

6. The simulation method for temperature drop of the whole vehicle brake disc based on wheel rotation according to claim 3, characterized in that, Before performing transient solid heat transfer simulation on the solid computational domain model of the brake disc, the following steps are also included: A third physical condition parameter is set for the solid computational domain model of the brake disc, wherein the third physical condition parameter includes at least: the physical model is solid, implicit unsteady state, and solid properties.

7. The simulation method for temperature drop of the whole vehicle brake disc based on wheel rotation according to claim 3, characterized in that, Before performing steady-state flow field simulation on the whole vehicle computational domain model, the following steps are also included: A grid-reinforced domain is set for the brake disc surface, the airflow channel between the rim cover and the wheel, the wheel spoke structure, and the bottom area of ​​the chassis.

8. The simulation method for temperature drop of vehicle brake disc based on wheel rotation according to claim 3, characterized in that, Based on the independent fixed computational domain of the brake disc, after determining the simulation results of the temperature drop of the entire vehicle brake disc through coupled simulation using a preset wheel rotation coordinate system and a preset rotation speed, the process also includes: Based on the simulation results of the vehicle brake disc temperature drop, the vehicle brake disc temperature drop monitoring curve data and brake disc surface temperature image data are obtained by presetting the average surface temperature and convective heat transfer coefficient of the brake disc.

9. A simulation device for the temperature drop of a vehicle brake disc based on wheel rotation, characterized in that, include: The acquisition module is used to acquire data on the exterior components of the target vehicle model and determine the vehicle computational domain model based on the data on the exterior components of the target vehicle model. The partitioning module is used to determine the independent fixed computational domain of the brake disc by independently partitioning the brake disc area based on the vehicle computational domain model. The simulation module is used to determine the simulation results of the temperature drop of the whole vehicle brake disc by performing coupled simulation based on the independent fixed calculation domain of the brake disc through a preset coordinate system of wheel rotation and a preset rotation speed.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored executable program, wherein, when the executable program is executed, it controls the device where the storage medium is located to execute the whole vehicle brake disc temperature drop simulation method based on wheel rotation as described in any one of claims 1 to 8.

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