摘要
利用计算流体力学(CFD)软件CFX对轿车尾随集装箱车的过程进行了数值模拟,得到在尾随过程中轿车的气动阻力系数相对变化曲线图,并对尾随时轿车外流场进行分析与研究,仿真分析表明:轿车的气动阻力系数随两车距离减小而减小,当车间距为2倍的轿车车长时达到最小,车间距再减小时气动阻力系数又增大。
By employing computational fluid dynamics software CFX to numerically simulate the process of a car trailing a container truck, a relative aerodynamic drag coefficient curve of the car in the process of trailing is obtained, and a study on the external flow field of the car is carried out. The results show that the drag coefficient of the car gradually lowers down with the decrease of the distance between two vehicles, and the drag coefficient attains the minimum when the distance is two times of the car length, while the drag coefficient increases again with the further reduction of the distance.
出处
《汽车工程》
EI
CSCD
北大核心
2008年第8期696-699,共4页
Automotive Engineering
基金
湖南省自然科学基金重点项目(06FJ2001)资助
关键词
汽车空气动力学
外流场
尾随
气动阻力系数
vehicle aerodynamics
external flow field
trailing
aerodynamic drag coefficient
