比亚迪汉空气动力学开发

2024年1月25日发(作者：吉利博越论坛)

Vol.10 No.6第10卷 第6期汽车工程学报 第2020罗秋丽 等：比亚迪汉空气动力学开发6期

Nov. 2020399Chinese Journal of Automotive Engineering年11月比亚迪汉空气动力学开发罗秋丽，张风利，张荣荣，魏晓冲，李 兵，彭 倩（比亚迪汽车工业有限公司，广东，深圳 518118）摘 要：汉是比亚迪基于全新纯电动车平台开发的一款车型，为增加续驶里程对整车的风阻系数提出了极高的要求。全新的造型设计风格对风阻开发带来很大挑战，为实现风阻目标搭建了一套适用的空气动力学开发流程，并以CFD仿真为主要开发工具，分别完成外造型、前舱、车底部、主动进气格栅和低风阻轮辋等附件的空气动力学开发，最后通过实车风洞试验进行验收。对该车型的风洞试验仿真对标发现，采用分离涡模拟（Detached Eddy Simulation，DES）湍流模型可以获得较高的风阻仿真精度。关键词：汽车风阻；风洞试验；CFD仿真对标；DES湍流模型中图分类号：U462.3+4文献标识码：ADOI：10.3969/.2095-1469.2020.06.02The Aerodynamic Development of the BYD HanLUO Qiuli，ZHANG Fengli，ZHANG Rongrong，WEI Xiaochong，LI Bing，PENG Qian（BYD Auto Industry Company Limited，Shenzhen 518118，Guangdong，China）Abstract：Han is a new sedan model developed by BYD Auto based on a brand new EV platform. The ultra-low air resistance was required to extend the cruise range. Its band-new design style brings great challenges

to the aerodynamic development. So a suitable aerodynamic development process was carried out and the

CFD simulation was conducted. The exterior styling, underbody, the vehicle underhood and the aerodynamic

accessories such as AGS and the low-air-drag wheel rim were studied, optimized by the CFD method and

verified in wind tunnel testing finally. The correlation between results from CFD simulation and results

measured from wind tunnel testing are studied and it is found that the value of Cd can be more accurate by

applying the DES turbulence model in ds：vehicle air drag; wind tunnel test; CFD simulation correlation; DES turbulence model汉是比亚迪基于全新纯电动车平台开发的高端旗舰轿车，采用全新“Dragon face”造型设计语言，配备“多合一”集成式电驱动系统和创新性的“刀片电池”，是比亚迪新一代纯电动车型的杰出代表。汉将续驶里程作为该车型的核心性能，而降低风阻是提升续驶里程的主要途径之一。根据动力经济性计算，该车型风阻系数每降低10 count，NEDC工况续驶里程可提升约8 km。因此，该车型特别重视空气动力学开发，风阻系数目标瞄准世界顶级量产轿车。收稿日期：2020-05-31 改稿日期：2020-08-31参考文献引用格式：罗秋丽，张风利，张荣荣，等. 比亚迪汉空气动力学开发 [J]. 汽车工程学报，2020，10(6)：399-406.

LUO Qiuli，ZHANG Fengli，ZHANG Rongrong，et al. The Aerodynamic Development of the BYD Han [J]. Chinese Journal

of Automotive Engineering，2020，10(6)：399-406. (in Chinese)