某纯电SUV镂空尾翼气动性能研究

Study on Aerodynamic Performance of Hollow Out Tail of a Pure Electric SUV

文章基于某纯电SUV车型,通过计算流体力学仿真与全尺寸气动声学风洞,研究了4种镂空尾翼的设计方案,利用表面敏感度仿真分析、Morphing网格变形技术、DOE主动寻优以及全细节油泥模型风洞测试等方法,对镂空尾翼进行减阻设计。结果表明,改进镂空尾翼的造型、大小以及扰流条等方案,均可有效降低整车气动阻力,减阻效果最大可达6.13%。

In this paper,the computational fluid dynamics simulation and full-scale aeroacoustic wind tunnel are used to study four design schemes of hollow out tail in a pure electric SUV.The drag reduction design of hollow out tail is carried out by using the methods of surface sensitivity simulation analysis,Morphing mesh deformation technology,DOE active optimization and full detail clay model wind tunnel test.The results show that the aerodynamic drag of the whole vehicle can be effectively reduced by improving the shape,size and spoiler of the hollow tail,and the maximum drag reduction effect can be 6.13%.