摘要
用正交试验法对某款大型SUV的后视镜设计了9种优化方案,应用计算流体力学法对汽车外部流场进行三维数值分析。仿真分析表明,后视镜风阻占整车风阻系数的8.3%;后视镜的最佳优化方案可以使整车风阻降低0.56%。风洞试验表明,整车风阻实际降低0.63%,仿真计算误差小于1%,优化方案准确可行。
Orthogonal design of experiments was used to design nine kinds of experiments on rearview mirror which is attached to large SUV, and three dimensional numerical analysis of the external flow field of the vehicle is based on the computational fluid dynamics （CFD） method. A conclusion can be drawn from comparative analysis, the aerodynamic drag of rearview mirror for the whole is 8.3%; the best optimal aerodynamic model can make the vehicle wind resistance reduced by 0.56%. Tunnel test re- sults show that, the actual wind resistance of vehicle can be reduced by 0.63% and the error of simulated results is less than 1%, the best optimization solution is accurate and effective.
出处
《农业装备与车辆工程》
2016年第10期18-22,共5页
Agricultural Equipment & Vehicle Engineering
基金
上海市教委重点学科建设项目(13JC1408500)
关键词
正交试验设计
CFD
后视镜
风洞试验
orthogonal design of experiments
computational fluid dynamics （CFD）
rearview mirror
tunnel test
