Numerical Simulation and Experimental Research on the Flow Field of Automobile in Environmental Wind Tunnel

被引：0
作者：
Xu X. [1 ]
Wang Y. [1 ]
Yu Y. [1 ]
Wang D. [1 ]
Wang W. [1 ]
Xu J. [1 ]
Zhang L. [2 ]
机构：
[1] Wind Tunnel Center, CATARC（TianJin）Automotive Engineering Research Institute Co. ，Ltd., Tianjin
[2] School of Automotive Studies, Tongji University, Shanghai
来源：
Qiche Gongcheng/Automotive Engineering | 2024年 / 46卷 / 03期
关键词：
cooling module; environmental wind tunnel; flow field quality; numerical simulation; wind tunnel experiment;
D O I：
10.19562/j.chinasae.qcgc.2024.03.018
中图分类号：
学科分类号：
摘要：
In order to study the flow field characteristics of the vehicle in environmental wind tunnels，the numerical models of the environmental wind tunnel and the vehicle are established. Considering the blocking effect of the nozzle and contraction section of the environmental wind tunnel，the boundary layer suction and the interfer⁃ ence effect of the test facilities on the vehicle flow field，the flow fields in front of the vehicle，around the vehicle body and wheels，in the cooling module and cabin are numerically simulated. The static pressure on the surface of the vehicle，the wind speed around the vehicle body and the bottom of the vehicle are tested. Comparison of the nu⁃ merical simulation results with the experimental results shows that the numerical wind tunnel can accurately predict the flow field characteristics of the vehicle in the environmental wind tunnel. The results show that the velocity distri⁃ bution of the front-end airflow of the vehicle changes significantly with the airflow direction，with the uniformity of the air velocity deteriorating as it getting closer to the front cooling module. The airflow at the bottom of the vehicle changes regularly under the joint influence of the ground，the bottom of the vehicle and the rotation of tires，with the air velocity at the bottom of the vehicle increasing first and then decreasing along the longitudinal direction of the ve⁃ hicle body. This method provides a new idea and reference for studying the thermal aerodynamic performance of ve⁃ hicles in the environmental wind tunnel and developing the numerical wind tunnel. © 2024 SAE-China. All rights reserved.
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页码：536 / 545
页数：9
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