摘要
选取LUD离散格式、RNGκ-ε湍流模型,利用计算流体力学进行了运动型多功能车外流场的模拟研究。结果表明,模拟所得车身表面压力分布、尾流典型截面各向流速分布、尾流结构等与风洞试验值吻合性好;SUV尾流中存在上、下不对称的反向涡对,抑制该涡对的大小和强度可减小气动阻力。
CFD was used to simulate flow field outside a SUV.LUD discrete scheme and RNGK-εoverfall model were selected.The results show：the surface pressure distributions,the wake velocity distribution of the special profiles and the wake flow structures were similar with wind tunnel experimental.Two asymmetry inverse wake vortexes are located in the SUV wake flow.To restrict the development of the wake vortexes can reduce the drag coefficient.
出处
《汽车技术》
北大核心
2007年第10期24-27,共4页
Automobile Technology
基金
国家自然科学基金资助项目(60222207)。
关键词
SUV
表面压力
涡流
计算流体力学
数值模拟
SUV,Surface pressure,Bow wave,Computational fluid dynamics,Numerical simulation
