基于CFD的SUV空气动力学特性与仿真分析  

Research and Simulation Analysis of SUV's Aerodynamics Characteristics Based on CFD

作　　者：徐鹏[1] 李春花[1] 解方喜[2] 

机构地区：[1]长城汽车股份有限公司技术中心河北省汽车工程技术研究中心 [2]吉林大学

出　　处：《汽车工程师》2013年第12期21-23,共3页Automotive Engineer

基　　金：国家自然科学基金资助项目(51206059)

摘　　要：为提高SUV的空气动力学性能,文章闸述了造型与空气动力学相结合的汽车造型开发流程,利用CFD方法对某SUV的空气动力学性能进行模拟,模型模仿风洞试验,得出该车的风阻系数为0.343,根据该车压力分布、气流流动分布以及湍动能分布情况,对车身局部区域的造型提出优化建议,最终使车型空气动力学性能满足设计要求。In order to improve the aerodynamic performance of SUV, this paper describes the development process of SUV＇s styling based on the combination of styling and aerodynamics, and illustrates the performance simulation of aerodynamics by using CFD. the wind-tunnel test is simulated by model and drag coefficient of 0.343 was obtained. The suggestions about partial styling optimization of body were proposed based on air pressure distribution, air flow and turbulent kinetic＇ energy distribution. Finally, SUV＇s aerodynamics performance meets the design requirements.

关 键 词：SUV 空气动力学 CFD 风阻系数 湍动能 

分 类 号：U461.1[机械工程—车辆工程]