Aerodynamic characteristics of a racing car in pitching motion

被引：0
作者：
Zhang Z. [1 ]
Song S.-D. [1 ]
Wang G.-H. [1 ]
Zhang Y.-C. [1 ]
机构：
[1] State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun
来源：
Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (Engineering and Technology Edition) | 2023年 / 53卷 / 08期
关键词：
aerodynamic characteristics; automotive aerodynamics; pitching motion; racing car;
D O I：
10.13229/j.cnki.jdxbgxb.20211091
中图分类号：
学科分类号：
摘要：
In this paper，the simulation conditions of pitching motion are determined，and the external flow field of the whole vehicle under various conditions is simulated and analyzed. The aerodynamic characteristics under various pitching conditions and the interaction between aerodynamic components are explored. The reasons for the differences of aerodynamic result between various pitching conditions are obtained by analyzing the changes of flow field around the vehicle body. By analyzing the simulation data，it can be seen that the aerodynamic negative lift of the car under all pitching conditions is mainly provided by the body，front wing and tail wing，while the front and rear wheels mainly provide aerodynamic lift. The aerodynamic drag of the car is mainly generated by the body and tail wing，and the sum of the two accounts for more than 75%. The sum of the aerodynamic drag of the front and rear wheels accounts for only about 10%. When the car body attitude changes in pitch，the changes of front wing，tail wing，ground clearance and the interaction between aerodynamic components lead to the change of the aerodynamic characteristics of the whole car. The results show that under the condition of pitch angle -1.0°，the aerodynamic lift drag ratio of the whole vehicle is the largest，the aerodynamic efficiency of the car is the highest，the absolute value of the total aerodynamic negative lift is the largest，the total aerodynamic resistance is relatively small，and the aerodynamic pitch torque is the smallest. Under this condition，the performance of the car is the best. © 2023 Editorial Board of Jilin University. All rights reserved.
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页码：2201 / 2211
页数：10
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