车轮对整车气动性能影响的试验与仿真研究

doi:10.19562/j.chinasae.qcgc.2021.12.015

Abstract

Abstract:

Based on the wind tunnel test of a type of car， the influence of 5 different tires and 3 rims on the aerodynamic performance of the vehicle and their interaction are studied， and the PIV （Particle Imaging Velocimetry） is used to measure and compare the flow field near the wheels. The results show that the difference of drag and lift coefficient among tires with different tread patterns is up to 0.003 and 0.026 respectively， and the difference varies with the rim design. Then the deformation of different tires under rotation is measured by the image recognition， in order to reproduce the correct tire geometry for simulation and calculation. By comparing the results of simulation and test， the reasons for the difference of aerodynamic performance caused by tires with different tread patterns are analyzed， which provides guidance for the wheel aerodynamics development.

Key words: aerodynamic, treaded tire, deformation, drag, wind tunnel test, PIV

Chao Ren,Haibo Wu,Qian Chen. Experimental and Simulation Research on the Influence of Wheels on Vehicle Aerodynamic Performance[J].Automotive Engineering, 2021, 43(12): 1848-1857.

Figures/Tables 25

References 16

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工况	轮辋	轮胎	描述
1	1	1	轮辋封闭/不封闭
2	1	2	轮辋封闭/不封闭
3	1	3	轮辋封闭/不封闭
4	2	1	轮辋封闭/不封闭
5	2	2	轮辋封闭/不封闭
6	2	3	轮辋封闭/不封闭
7	3	4	轮辋封闭/不封闭
8	3	5	轮辋封闭/不封闭

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Experimental and Simulation Research on the Influence of Wheels on Vehicle Aerodynamic Performance

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