A blast opening design simulation integration method and system based on a PLM platform

Abstract

The application discloses a kind of based on PLM platform's air port design simulation integration method and system, it is related to building ventilation air conditioning system design technical field, for solving the problem of long design cycle, low optimization efficiency caused by lack of quantitative basis in traditional air port design arrangement and design and simulation disconnection.For method includes obtaining room space information and air supply, set air port spacing and height complete air port arrangement and calculate wind speed, if wind speed meets preset specification requirement, generate simulation model, if it does not meet, by adjusting air port spacing or size until it meets specification, simulation model is preprocessed and packaged as wind speed variable simulation engineering template, all meet specification condition instance template and associate wind speed Batch execute simulation calculation, based on simulation result compares and selects optimal scheme.The application can improve the scientificity and normative of air port design, do not need to cut platform, just in PLM platform can be completed, greatly shorten design cycle, improve multi-scheme comparison efficiency.

Description

Technical Field

[0001] This invention relates to the field of building ventilation and air conditioning system design technology, specifically to the application of product lifecycle management (PLM) platforms and the field of airflow organization simulation technology, and in particular to an integrated method and system for air outlet design and simulation based on a PLM platform. Background Technology

[0002] As a key component of the ventilation system, the placement of air vents directly affects indoor airflow organization, air supply efficiency, and occupant comfort. A well-designed air vent system requires comprehensive consideration of factors such as room size, air volume requirements, and airflow distribution to ensure that wind speed meets specifications and achieves optimal airflow organization.

[0003] In traditional air vent design processes, designers typically rely on experience to determine vent parameters. For example, they might use a similar number and size of vents for offices of similar size. This approach leads to arbitrariness in vent selection. Due to a lack of quantitative analysis of details such as room shape, internal obstructions, and heat source distribution, traditional designs are prone to problems. For instance, placing vents at only one end of a long, narrow room can result in excessively low airflow velocity and substandard temperature at the far end, creating a dead airflow area. Conversely, oversized vents may cause excessively high airflow velocity at the near end, leading to uncomfortable direct airflow.

[0004] The lack of scientific quantitative basis leads to considerable arbitrariness in the selection of the number, location, and size of air vents. This design approach struggles to accurately meet room airflow requirements, often resulting in substandard wind speeds and uneven airflow distribution, impacting indoor air quality and comfort. Airflow organization simulation is a crucial tool for evaluating the rationality of air vent design; however, in traditional design processes, this type of simulation is often omitted or remedied later, failing to be integrated into the early design stages. This disconnects air vent design from airflow organization simulation, resulting in a lack of predictive duct performance in the design scheme. Optimization relies solely on repeated modifications and on-site testing, leading to long design cycles and low efficiency.

[0005] Furthermore, most existing digital design and airflow simulation technologies emphasize the design of the upstream duct to the air outlet section, without considering the overall design of the downstream air outlet itself and the interaction with the indoor environment. They rely on later air outlet layout simulation or airflow organization simulation to make adjustments, resulting in a disconnect between air outlet design and airflow organization simulation.

[0006] Furthermore, most "vent layout" and "airflow organization simulation" are based on a single design condition, and the optimization results rely on the training effect of historical data. They lack a comprehensive evaluation of different design conditions and cannot support a fast, efficient, and intuitive evaluation method that requires frequent comparison of multiple options.

[0007] Alternatively, the focus may be on optimizing ventilation system control strategies without addressing parametric design of vent layout, lacking a systematic adjustment mechanism for vent parameters that do not meet specifications, and requiring data exchange between different software, resulting in a disconnect between design and simulation. For example, existing technologies require remodeling after duct and vent design is completed in Fluent simulation, even though the completed model can be used for subsequent duct design modeling; or the simulation model needs to be rebuilt in Revit and then imported into the specialized airflow organization simulation software COMSOL for calculation. Switching software and remodeling during simulation increases the steps of software switching and reconstruction, making it impossible to guarantee data consistency and accuracy, and also hindering rapid batch simulation, thus affecting design efficiency. Summary of the Invention

[0008] The purpose of this invention is to provide an integrated method and system for air vent design and simulation based on a PLM platform, in order to solve the following technical problems existing in the prior art: (1) The layout of air outlets lacks scientific quantitative basis and relies on experience, resulting in a large degree of arbitrariness in the selection of the number, location and size of air outlets, making it difficult to accurately meet the room air supply requirements. (2) The design and simulation processes are disconnected, requiring switching between different software and remodeling, resulting in poor data consistency and a complex design process. (3) There is a lack of a systematic adjustment mechanism when the air outlet parameters do not meet the specifications. When the wind speed does not meet the standard, the optimization process relies on repeated trial and error, resulting in a long design cycle. (4) The efficiency of multi-scheme comparison is low. Each scheme needs to be repeatedly processed before and after simulation, which cannot quickly cover multiple working conditions for comprehensive evaluation.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: A method for integrated design and simulation of air vents based on a PLM platform includes the following steps: S1 acquires room space information and air volume, selects vent style, sets vent spacing and height to complete vent layout, and calculates the wind speed of each vent. S2 If the air outlet wind speed meets the preset requirements, extract the air outlet location parameters, size information and room space size data, generate the corresponding simulation calculation domain and boundary, and create a simulation model; S3 If the air velocity at the air outlet does not meet the preset specification requirements, adjust the air outlet spacing to change the number of air outlets, or adjust the air outlet size while keeping the air outlet position unchanged, until the air velocity meets the specification requirements, and then execute the creation of simulation model in step S2. S4 performs preprocessing on any of the aforementioned simulation models, including setting fluid domain materials, boundary conditions, and output parameters, starting simulation calculations, and performing postprocessing; the preprocessing and postprocessing process is then encapsulated in the PLM platform as a simulation engineering template with variable wind speed. S5: For all simulation models corresponding to operating conditions that meet the specifications, instantiate the simulation engineering templates and associate them with the air vent speeds of the corresponding operating conditions, perform simulation calculations in batches, and select the optimal air vent layout scheme based on the simulation results.

[0010] Through the above technical solutions, this invention establishes a complete closed-loop process from parametric layout of air outlets, verification of wind speed specifications, parameter adjustment rules, automatic generation of simulation models, encapsulation of simulation engineering templates to batch simulation comparison, realizing deep integration of air outlet design and airflow organization simulation. It eliminates the need to switch between simulation and design platforms, and all design and simulation can be completed on the PLM platform, avoiding the disconnect between design and simulation in the traditional design process.

[0011] Further, in step S1, the room space information is obtained by extracting the room wall model from the preliminary design stage, including the room length, width and ceiling height; after the air vents are arranged, the air vent data is stored in an independent node, and the air vent data includes the air vent location, size and calculated wind speed information.

[0012] Further, in step S3, the adjustment method includes: The first method is to change the horizontal or vertical spacing of the air vents to adjust the number of air vents and recalculate the wind speed until it meets the specifications. The second method is to keep the vent spacing and position unchanged, adjust the vent size, and recalculate the wind speed until it meets the specifications.

[0013] Preferably, in the first method, the number of air vents is increased by reducing the horizontal and vertical spacing of the air vents, thereby reducing the wind speed of a single air vent.

[0014] Preferably, in the second method, the air velocity of a single air outlet is increased by reducing the size of the air outlet.

[0015] Further, in step S4, the preprocessing includes: setting the air outlet as a velocity inlet boundary condition and setting the wind speed as an input parameter; setting the pressure outlet boundary condition; setting the initial temperature condition to simulate cooling or heating conditions; generating a computational grid and setting the boundary layer; and setting the desired simulation results to be output.

[0016] Further, in step S4, the post-processing includes: extracting the temperature field, streamline distribution, and working area wind speed.

[0017] Furthermore, in step S5, the simulation results of multiple working conditions are compared and analyzed, including comparing the temperature field distribution, streamline distribution, and wind speed distribution data of each working condition, and evaluating the airflow organization effect based on preset standards to select the optimal air outlet layout scheme.

[0018] This invention also provides an integrated system for air vent design and simulation based on a PLM platform, used to implement the above method, including: The air outlet layout module is used to automatically arrange air outlets and calculate wind speed based on the input room information and air outlet parameters. The simulation model generation module is used to automatically generate a simulation model containing the computational domain and boundary conditions when the wind speed meets the specifications. The parameter adjustment module is used to allow users to adjust the air outlet spacing or air outlet size and re-verify the wind speed when the wind speed does not meet the specifications. The simulation template encapsulation module is used to encapsulate the simulation preprocessing, solving and postprocessing process into a reusable engineering template, in which the air outlet wind speed is a configurable parameter; The batch simulation and comparison module is used to instantiate simulation templates for multiple operating conditions, execute simulations in batches, and output comparison results.

[0019] Furthermore, the air vent arrangement module includes: The room information extraction unit is used to extract the room length, width, and ceiling height from the room wall model in the preliminary design stage. The vent data management unit is used to store vent location, size, and wind speed information on an independent node.

[0020] Furthermore, the parameter adjustment module includes: The spacing adjustment unit is used to change the horizontal or vertical spacing of the air vents to adjust the number of air vents. The size adjustment unit is used to adjust the size of the air outlet while keeping the position of the air outlet unchanged.

[0021] Furthermore, the simulation template encapsulation module includes: The boundary condition setting unit is used to set the velocity inlet, pressure outlet, and initial temperature conditions; The parameterized configuration unit is used to set the air outlet velocity as a variable input parameter; The post-processing configuration unit is used for the output extraction of preset temperature field, streamline distribution and working area wind speed.

[0022] Furthermore, the batch simulation and comparison module includes: The template instantiation unit is used to automatically instantiate simulation engineering templates for simulation models under different working conditions; Batch computing units are used to perform simulation calculations for multiple operating conditions in parallel or serially. The results comparison unit is used to compare and analyze the temperature field, velocity distribution, and airflow organization effect under various operating conditions, and output the optimal solution recommendation.

[0023] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the above-described integrated method for air vent design and simulation based on a PLM platform are implemented.

[0024] The present invention also provides an electronic device, comprising: a processor and a memory; the memory for storing a computer program; the processor for executing the computer program stored in the memory to cause the electronic device to perform the steps of the integrated air vent design and simulation method based on the PLM platform as described in any of the preceding claims.

[0025] Compared with the prior art, the present invention has the following significant advantages: (1) Achieving an integrated closed-loop design and simulation process, breaking down the disconnect between different stages. Traditionally, the design of air vents and the simulation of airflow organization are disconnected, with simulation often omitted or only remedied later, resulting in a lack of intuitive effect prediction for the design scheme. This invention, based on a PLM platform, integrates the entire process of air vent layout, parameter adjustment, simulation model generation, batch calculation, and scheme comparison into a unified platform, achieving a closed loop of "design is verification, simulation is optimization". Designers do not need to switch between multiple software programs, avoiding data conversion errors and redundant modeling, and ensuring the consistency and accuracy of the data.

[0026] (2) A systematic parameter adjustment mechanism is provided. When the wind speed does not meet the requirements of the specification, the wind speed can be quickly optimized by changing the number of air outlets by changing the spacing between them or keeping the position and adjusting the size. This avoids the inefficient process of repeated trial and error in traditional design and significantly shortens the design cycle.

[0027] (3) It realizes the scientific and standardized layout of air outlets. By automatically calculating the number, location and wind speed of air outlets based on the room air volume and space information, it avoids the arbitrariness caused by relying on experience in traditional design and ensures that the air outlet layout plan has a scientific quantitative basis.

[0028] (4) Simulation engineering template encapsulation and batch instantiation lower the professional technical threshold, improve the level of design standardization, and greatly improve design efficiency. This invention innovatively encapsulates the simulation preprocessing, solving, and post-processing process into a simulation engineering template with variable wind speed. For multiple working conditions that meet the specifications, only the template needs to be instantiated and the wind speed parameters updated to automatically complete the entire simulation process without repeating the tedious preprocessing settings. This reduces the dependence on the CFD professional capabilities of designers. Designers only need to focus on the selection of vent layout strategies, and the complex simulation settings are automatically completed by the system, which is conducive to promoting standardized vent design processes within enterprises. Compared with the traditional method where each working condition needs to be modeled, boundary conditions set, and meshed separately, this invention shortens the simulation preparation time by more than 80% and significantly improves the efficiency of multi-scheme comparison.

[0029] (5) Supports parallel comparison of multiple schemes to achieve optimal design decision. By encapsulating the simulation pre- and post-processing process into an engineering template with variable wind speed, batch simulation calculations for different working conditions are realized. Compared with the traditional method where each scheme needs to repeat the pre- and post-processing operations, the efficiency is significantly improved, and it can quickly cover multiple design schemes for comprehensive evaluation.

[0030] In addition, by comparing multiple evaluation indicators such as temperature field distribution, streamline distribution, and working area wind speed, the airflow organization effect of each scheme is comprehensively evaluated, avoiding the limitations of single indicator evaluation. This ensures that the final selected air outlet layout scheme achieves optimal performance in terms of temperature uniformity, airflow organization rationality, and personnel comfort, fully meeting the requirements of modern buildings for high performance and high comfort of ventilation systems.

[0031] (6) Data management based on the PLM platform ensures design traceability.

[0032] This invention stores vent data (location, size, and wind speed) on independent nodes of a PLM platform, forming a structured association with room models and simulation models. This data management approach facilitates design version control, change tracking, and collaboration in subsequent ventilation system design, laying the foundation for the full lifecycle management of building ventilation systems. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of the integrated air vent design and simulation method based on the PLM platform according to an embodiment of the present invention.

[0034] Figure 2 This is a schematic diagram of a room model according to an embodiment of the present invention.

[0035] Figure 3This is a schematic diagram of the air outlet arrangement for working condition 1 in an embodiment of the present invention, where 1 is the wall, 2 is the ceiling, and 3 is the air outlet.

[0036] Figure 4 This is a schematic diagram of the wind speed non-compliance prompt interface in an embodiment of the present invention.

[0037] Figure 5 This is a schematic diagram of the air outlet arrangement in working condition 2 of the present invention, where 1 is the wall, 2 is the ceiling, and 3 is the air outlet.

[0038] Figure 6 This is a schematic diagram of the air outlet arrangement for working condition 3 in an embodiment of the present invention, where 1 is the wall, 2 is the ceiling, and 3 is the air outlet.

[0039] Figure 7 This is a schematic diagram of the simulation engineering template instantiation process according to an embodiment of the present invention.

[0040] Figure 8 This is a schematic diagram of the simulation calculation process in an embodiment of the present invention.

[0041] Figure 9 This is a schematic diagram comparing the streamline distribution under three working conditions according to an embodiment of the present invention.

[0042] Figure 10 This is a schematic diagram comparing the wind speed in the working area under three different working conditions according to an embodiment of the present invention. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0044] It should be noted that the technical terms used in the following embodiments are defined as follows: PLM platform refers to a product lifecycle management platform, which is a unified platform for integrating product design, simulation and optimization; An air vent is a component in a ventilation and air conditioning system used for air delivery. Airflow organization refers to the flow pattern and distribution of indoor air; Simulation engineering templates refer to reusable templates that encapsulate the simulation pre-processing, solving, and post-processing workflows. The work area refers to the area where personnel can move around at a set height above the ground, usually 1.5m.

[0045] like Figure 1 As shown, this embodiment provides an integrated design and simulation method for air vents based on a PLM platform, including the following steps: S1: Select the vent style, set the vent spacing and height according to the room's air supply volume and room space information, arrange the vents in the model, and calculate the wind speed of each vent. S2: If the wind speed meets the specifications, the user can choose to start the simulation model generation function. The program will automatically extract the air outlet location parameters, size information and room space size data to generate the corresponding calculation domain and boundary. S3: If the air velocity at the air outlet does not meet the specifications, users can adjust it in two ways: one is to change the spacing between air outlets to adjust the number of air outlets, and the other is to adjust the size of the air outlets based on the original layout. The program will determine in real time whether the adjusted air velocity meets the specifications. For working conditions that meet the requirements, the corresponding simulation model can also be generated. S4: Perform preprocessing on the simulation model, set the air outlet as the velocity inlet, the wind speed as the input parameter, define the mesh and output results for simulating summer cooling conditions, then start the simulation calculation and extract relevant data on temperature field and flow velocity distribution; in the PLM platform, encapsulate this process into a simulation engineering template with variable wind speed, and then instantiate the simulation engineering template for all operating conditions to automatically complete the preprocessing and postprocessing. S5: Instantiate the simulation engineering template for each working condition simulation model, associate the inlet wind speed of each simulation model with the corresponding wind speed, perform batch simulations, compare the results, and select the most suitable air outlet layout scheme.

[0046] Specifically, the steps are as follows: S11: Obtain the room wall model in the preliminary design phase and extract the spatial information enclosed by the walls. Figure 2 The middle room is a rectangle with a length of 11600mm and a width of 7400mm, and the initial ceiling is set at 3m above the ground.

[0047] S12: Use the room air volume calculated from the load as the input parameter, and simultaneously input the vent spacing and height. Select the vent style. According to project requirements, the air volume is 7900 m³ / h. In the program, set the horizontal and vertical vent spacing to 3600 mm, input the air volume, set the ceiling height, and initially select a 370x370 mm diffuser vent with a throat size of 320x320 mm. The program calculates the number and location of vents based on the room dimensions and arranges the vents accordingly (e.g., ...). Figure 3 As shown in the figure, after completion, the program will store the air outlets under a separate newly created node and calculate the wind speed of each air outlet as 3.57m / s, which meets the diffuser wind speed limit requirements specified in the standard (such as Article 7.4.11 of GB50736-2012-T "Code for Design of Heating, Ventilation and Air Conditioning of Civil Buildings"). The wind speed information of the air outlets is also stored under the node of the air outlet in this working condition.

[0048] S21: Run the simulation model creation program, which constructs the internal space geometry based on the room shape parameters; simultaneously extract the location coordinates and size data of the air vents, generate the corresponding computational domain and outlet boundary, and complete the creation of the simulation model; then publish the extracted room interior space and air vent model, and write the air vent wind speed parameters into the simulation model, naming the model "Condition 1".

[0049] S31: To avoid problems such as poor system performance and uneven airflow due to the limitations of a single solution, we continue to try other layout schemes. This example shows the method of adjusting the number of air outlets by changing the spacing between air outlets when the wind speed does not meet the specifications.

[0050] The horizontal spacing is set to 4000mm, and the vertical spacing is 6000mm. A 350x350mm diffuser outlet is selected, with a throat size of 300x300mm. According to the S1 process flow, the outlet air velocity is calculated to be 6.095m / s. Figure 4 As shown, the program prompts: This does not meet the specifications. Reduce the spacing between air vents to 2400mm both horizontally and vertically to increase the number of air vents. The air vent arrangement is as follows: Figure 5 As shown, the recalculated wind speed is 2.03 m / s, which meets the specification requirements. The simulation model is generated according to the steps in S2 and named "Condition 2".

[0051] S32: To avoid problems such as poor system performance and uneven airflow due to the limitations of a single solution, we will continue to explore other layout schemes. This step demonstrates the adjustment method of adjusting the air outlet size while keeping the air outlet position unchanged when the wind speed does not meet the specifications. The horizontal spacing of the air vents is set to 1800mm, and the vertical spacing to 2000mm. A 300mm x 300mm diffuser vent is selected, with a throat size of 250mm x 250mm. The program calculates the air velocity at each vent to be 1.75m / s, which is too low and does not meet the specifications. Keeping the vent positions unchanged, the vent size is adjusted to 250×250mm (throat size 200×200mm). The vent arrangement is as follows. Figure 6 As shown, after regenerating the air vent, the calculated wind speed is 2.28 m / s, which meets the specification requirements. The simulation model is generated according to the steps in S2 and named "Condition 3".

[0052] S41: Preprocess one of the simulation models. Here, we select case 1, set the fluid domain and physical calculation model, define the boundary conditions, set the air vent as the velocity inlet, set the wind speed as the input parameter, set the pressure outlet position of the room, and set the initial temperature of the room. Here, we simulate the room cooling in summer. Set the mesh size and add a mesh boundary layer, select the results to be output, and then start the simulation calculation. After the calculation is completed, we perform post-processing. Here, we extract the streamline distribution and the velocity and temperature distribution of the 1.5m working area section.

[0053] S42: Encapsulate the S41 process into an engineering template within the PLM platform. The air outlet velocity is a variable parameter, such as... Figure 7 As shown, when simulating other working conditions, the pre-processing and post-processing are almost identical. Simply instantiate the engineering template for the simulation model to directly complete the pre-processing, set the airflow velocity at the vents, click "Calculate," and the post-processing pre-defined in the template will be automatically completed after the calculation. For example... Figure 8 As shown, the instantiation of simulation engineering templates optimizes user operations through standardized processes, saving users time in pre-processing and post-processing simulation models, reducing operational errors and effectively improving work efficiency.

[0054] S51: Instantiate the simulation project for working conditions 1, 2, and 3, change the wind speed at the velocity inlet to the wind speed corresponding to the working condition, start the simulation calculation, and automatically generate the post-processing results after the calculation is completed.

[0055] S52: Compare the results of the three operating conditions, including comparing the temperature field distribution, streamline distribution, and wind speed distribution data in the working area, and evaluate the airflow organization effect based on preset standards to select the optimal air outlet layout scheme.

[0056] Temperature field comparison analysis shows that the operating area temperature range for all three operating conditions is 24℃ to 26℃, with a relatively uniform temperature distribution and no localized overheating or undercooling areas. The cooling effect of the three operating conditions is not significantly different, and all can meet the requirements for indoor temperature comfort. The uniformity of the temperature field distribution mainly depends on the air supply volume and the room heat load. Under the same air supply volume and heat load conditions, different air outlet layout schemes have little impact on the temperature field distribution.

[0057] From the perspective of temperature field comparison, the cooling effect of the three operating conditions is not significantly different, and there are no areas with excessively high local temperatures. Figure 9 The streamline diagrams for the three operating conditions are compared. Conditions 2 and 3 show more uniform streamline distribution and more consistent streamline density, indicating better airflow organization uniformity. The uniformity of streamline distribution directly affects the comfort of personnel; local high-speed areas may cause discomfort from drafts, while local low-speed areas may lead to poor ventilation. Therefore, conditions 2 and 3 are superior to condition 1 in terms of streamline distribution uniformity.

[0058] Figure 10 Three working area wind speeds are given. In working area 1, the wind speed exceeds the 0.3 m / s limit, reaching 1.27 m / s. The wind speed cloud map of working area 1 shows a significant high wind speed area in the middle of the room, with the wind speed reaching the airflow convergence area in the corresponding streamline distribution map, indicating that the local airflow speed is too high and does not meet the requirements. The wind speed cloud maps of working areas 2 and 3 show that the wind speed distribution is relatively uniform, with no obvious high wind speed areas, which meets the requirements.

[0059] Taking into account three evaluation indicators—temperature field distribution, streamline distribution, and wind speed in the working area—and combining them with cost factors, the optimal air outlet layout scheme was selected.

[0060] Regarding temperature field distribution, the three operating conditions are largely similar and all meet the requirements. In terms of streamline distribution, operating conditions 2 and 3 are superior to operating condition 1, with more uniform airflow organization. Regarding wind speed in the working area, operating condition 2 is superior to operating condition 3, and operating condition 3 is superior to operating condition 1. The maximum wind speed of operating condition 2 (0.8 m / s) is relatively low, resulting in better comfort. In terms of cost, operating condition 1 has 6 air vents (3), operating condition 2 has 12 air vents (3), and operating condition 3 has 18 air vents (3). The more air vents (3), the higher the material and installation costs. Operating condition 3 has the most air vents (3) and the highest cost; operating condition 2 has a moderate number of air vents (3) and a moderate cost; operating condition 1 has the fewest air vents (3) and the lowest cost.

[0061] Considering both airflow organization and cost, Condition 3 performs well in terms of uniform streamline distribution and comfortable airflow in the working area. Although the larger number of vents in Condition 3 results in higher costs, it provides better indoor air quality and comfort, meeting the high-performance and high-comfort requirements of modern buildings for ventilation systems. Therefore, the vent arrangement scheme of Condition 3 is selected as the optimal solution.

[0062] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A method for integrated design and simulation of air vents based on a PLM platform, characterized in that, Includes the following steps: S1 acquires room space information and air volume, selects vent style, sets vent spacing and height to complete vent layout, and calculates the wind speed of each vent. If the air vent speed meets the preset specifications, extract the air vent location parameters, size information, and room space size data, generate the corresponding simulation calculation domain and boundary, and create a simulation model. S3 If the air velocity at the air outlet does not meet the preset specifications, adjust the air outlet spacing to change the number of air outlets, or adjust the air outlet size while keeping the air outlet position unchanged, until the air velocity meets the preset specifications, and then execute the creation of simulation model in step S2. S4 performs preprocessing on any of the aforementioned simulation models, including setting fluid domain materials, boundary conditions, and output parameters, starting simulation calculations, and performing postprocessing; the preprocessing and postprocessing process is then encapsulated in the PLM platform as a simulation engineering template with variable wind speed. S5: For all simulation models corresponding to working conditions that meet the specifications, instantiate the simulation engineering templates and associate them with the air vent speeds of the corresponding working conditions. Perform simulation calculations in batches, compare and analyze the simulation results of multiple working conditions, including comparing the temperature field distribution, streamline distribution, and working area air speed distribution data of each working condition, and evaluate the airflow organization effect based on preset standards to select the optimal air vent layout scheme.

2. The integrated air vent design and simulation method based on a PLM platform according to claim 1, characterized in that, In step S1, the room space information is obtained by extracting the room wall model from the preliminary design stage, including the room length, width and ceiling height; after the air vents are arranged, the air vent data is stored in an independent node, and the air vent data includes the air vent location, size and calculated wind speed information.

3. The integrated air vent design and simulation method based on a PLM platform according to claim 1, characterized in that, In step S3, the adjustment method includes: The first method is to change the horizontal or vertical spacing of the air vents to adjust the number of air vents and recalculate the wind speed until it meets the specifications. The second method is to keep the vent spacing and position unchanged, adjust the vent size, and recalculate the wind speed until it meets the specifications.

4. The integrated air vent design and simulation method based on a PLM platform according to claim 3, characterized in that, In the first method, the number of air vents is increased by reducing the horizontal and vertical spacing of the air vents, thereby reducing the wind speed of a single air vent; in the second method, the wind speed of a single air vent is increased by reducing the size of the air vents.

5. The integrated air vent design and simulation method based on a PLM platform according to claim 1, characterized in that, In step S4, the preprocessing includes: setting the air inlet as a velocity inlet boundary condition and setting the wind speed as an input parameter; setting the pressure outlet boundary condition; setting the initial temperature condition to simulate cooling or heating conditions; generating a computational mesh and setting the boundary layer; and setting the desired simulation results to be output.

6. The integrated air vent design and simulation method based on a PLM platform according to claim 1, characterized in that, In step S4, the post-processing includes: extracting the temperature field, streamline distribution, and working area wind speed.

7. A PLM-based integrated system for air vent design and simulation, used to implement the method described in any one of claims 1 to 6, characterized in that, include: The air outlet layout module is used to automatically arrange air outlets and calculate wind speed based on the input room information and air outlet parameters. The simulation model generation module is used to automatically generate a simulation model containing the computational domain and boundary conditions when the wind speed meets the specifications. The parameter adjustment module is used to allow users to adjust the air outlet spacing or air outlet size and re-verify the wind speed when the wind speed does not meet the specifications. The simulation template encapsulation module is used to encapsulate the simulation preprocessing, solving and postprocessing process into a reusable engineering template, in which the air outlet wind speed is a configurable parameter; The batch simulation and comparison module is used to instantiate simulation templates for multiple operating conditions, execute simulations in batches, and output comparison results.

8. The integrated air vent design and simulation system based on a PLM platform according to claim 7, characterized in that, The simulation template encapsulation module includes: The boundary condition setting unit is used to set the velocity inlet, pressure outlet, and initial temperature conditions; The parameterized configuration unit is used to set the air outlet velocity as a variable input parameter; The post-processing configuration unit is used for the output extraction of preset temperature field, streamline distribution and working area wind speed.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the integrated air vent design and simulation method based on the PLM platform as described in any one of claims 1 to 6.

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