摘要
利用商用计算流体力学(CFD)软件CFX与CAD软件UG相结合,对某种型号的小轿车周围流场进行了三维数值模拟。通过在汽车尾部加装气体喷射装置来破坏汽车的尾涡,从而达到减阻的目的。重点分析了小轿车车尾涡流对气动阻力的影响。结果表明:采用此方式来减小汽车阻力是可行的。
A 3D numerical simulation on flow field around a car is conducted using commercial computational fluid dynamics software CFX combined with CAD software UG, with the effects of trailing vortex on the aerodynamic drag of the car emphatically analyzed. With the air injection devices added on the rear end of the car, the trailing vortex of the car is broken up. Simulation results show that the scheme is feasible to reduce the aerodvnamic drag of a car.
出处
《汽车工程》
EI
CSCD
北大核心
2008年第5期441-443,448,共4页
Automotive Engineering
关键词
RNGk-ε湍流模型
尾涡破坏装置
仿真
外流场
turbulence model
trailing vortex break-up devices
simulation
external flow field
