轿车外流场数值模拟  

Numerical Simulation of Flow Field around Car

作　　者：严鹏[1] 吴光强[1] 傅立敏[2] 胡兴军[2] 

机构地区：[1]同济大学汽车学院,上海200092 [2]吉林大学汽车学院,吉林长春130024

出　　处：《同济大学学报（自然科学版）》2003年第9期1082-1086,共5页Journal of Tongji University:Natural Science

摘　　要：应用计算流体力学(CFD)方法计算模拟轿车三维外流场,得出模拟计算结果。分析了影响模拟计算精度的原因,在此基础上应用优化网格和不同的湍流模型及差分格式,比较了计算结果并与风洞试验结果相验证。提出针对具体模拟对象,选择适当的模拟方法,以提高计算精度。The flow field around a car is simulated with the method of computational fluid dynamics(CFD) in this paper. Some aerodynamic parameters are obtained. Causes of accuracy of simulation result are analyzed. On the basis of analysis, the flow field is simulated with different turbulent models and differencing schemes on refined grid, and the result is compared with that of wind tunnel test. Thus a concept that an appropriate strategy should be applied to a special numerical simulation case to obtain most accurate result is proposed.

关 键 词：汽车空气动力学 数值模拟 湍流模型 差分格式 

分 类 号：U270.1[机械工程—车辆工程]