摘要
为研究地面边界条件对汽车外流场数值模拟的影响,制定了两种方案对某微型车进行数值模拟计算,并对结果进行分析.研究表明:不同的地面边界条件对汽车的底部流场有很大的影响,而对上部流场影响不大;不同的地面边界条件对汽车的气动升力和前轮的升力影响很大,对气动阻力和后轮升力影响较小;在汽车的外流场数值模拟中,采用移动地面条件可以提高数值模拟的精度.
To study the effect of the ground boundary on the numerical simulation of external flow field around the automo- bile, two schemes are made to numerically simulate the flow field around a mini-bus and the author analyzes the results. The study reveals that the different ground boundary greatly affects the aerodynamic lift and the front tire lift but has little effect on the aerodynamic drag and the rear tire lift. Precision can be improved on the basis of the moving ground in the numerical simulation of the external flow field around the automobile.
出处
《华东交通大学学报》
2008年第1期16-19,共4页
Journal of East China Jiaotong University
基金
教育部"春晖计划"资助项目(Z2004-1-55014)
关键词
移动地面
数值模拟
气动阻力
气动升力
moving ground, numerical simulation, aerodynamic drag, aerodynamic lift
