汽车底部复杂流场数值模拟  

Numerical Simulation on Complex Flow Field Under Vehicle

作　　者：罗建曦[1] 张扬军[1] 詹樟松 

机构地区：[1]清华大学,汽车安全与节能国家重点实验室,北京100084 [2]长安汽车股份有限公司,重庆400023

出　　处：《汽车工程》2003年第4期330-333,共4页Automotive Engineering

摘　　要：针对汽车底部流场研究的困难 ,提炼物理数学模型 ,发展相应数值计算方法 ;对长安微型汽车外部复杂三维流场进行求解 ,计算风阻值与道路试验结果符合较好。在此数值计算结果基础上 。In view of the complexities of under-vehicle flow, a few suitable models and a corresponding program were developed and used to simulate the 3D external flow field around a Changan Star minibus in this paper. The computation result of drag coefficient reasonably coincides with that of road test. Based on the results of numerical simulation, the complex turbulent flow under the vehicle were analyzed, laying a foundation for controlling under-vehicle flow, and further improving vehicle aerodynamic characteristics.

关 键 词：汽车底部流场 数值模拟 空气动力学 数值计算 计算流体力学 结构分析 

分 类 号：U461.1[机械工程—车辆工程] U463.1[交通运输工程—载运工具运用工程]