汽车工程

汽车工程 ›› 2019, Vol. 41 ›› Issue (2): 147-152.doi: 10.19562/j.chinasae.qcgc.2019.02.005

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某型SUV气动性能优化与验证

彭丽娟, 袁侠义, 陈志夫, 汤柱良, 陈林, 王超逸   

  1. 广州汽车集团股份有限公司汽车工程研究院,广州 511434
  • 收稿日期:2017-10-25 出版日期:2019-02-25 发布日期:2019-02-25
  • 通讯作者: 彭丽娟,硕士,E-mail:penglijuan@gaei.cn

Aerodynamic Performance Optimization and Verification of a SUV

Peng Lijuan, Yuan Xiayi, Chen Zhifu, Tang Zhuliang, Chen Lin, Wang Chaoyi   

  1. Automotive Engineering Institute, Guangzhou Automobile Group Co., Ltd., Guangzhou 511434
  • Received:2017-10-25 Online:2019-02-25 Published:2019-02-25

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摘要： 基于某SUV改款车的模型,采用网格变形技术,结合CFD软件,分析外造型面对气动阻力的影响。在此基础上,先后对气动阻力影响较大的外造型面和气动附件进行优化,结果使模型的气动阻力系数由0.407下降至0.347,经风洞试验实测为0.34,仿真误差仅为2.06%。

关键词: 气动阻力, 网格变形技术, CFD分析, 外造型面优化, 气动附件优化

Abstract: Based on the model for the model-change version of a SUV and by using mesh morphing technology and CFD software, the effects of exterior styling surfaces on aerodynamic drag are analyzed. On this basis, the key exterior styling surfaces and aerodynamic accessories having greater influences on aerodynamic drag are optimized successively. As a result, the aerodynamic drag coefficient of the model lowers from original 0.407 down to 0.347 and its measured value is 0.34 by wind tunnel test, with a simulation error of only 2.06%

Key words: aerodynamic drag, meshing morphing technology, CFD Analysis, exterior styling surface optimization, aerodynamic accessory optimization