汽车工程 ›› 2024, Vol. 46 ›› Issue (2): 356-365.doi: 10.19562/j.chinasae.qcgc.2024.02.018
收稿日期:
2023-08-24
修回日期:
2023-10-21
出版日期:
2024-02-25
发布日期:
2024-02-23
通讯作者:
胡兴军
E-mail:hxj@jlu.edu.cn
基金资助:
Jingfeng Shao1,Huihui Zuo1,Xingjun Hu2()
Received:
2023-08-24
Revised:
2023-10-21
Online:
2024-02-25
Published:
2024-02-23
Contact:
Xingjun Hu
E-mail:hxj@jlu.edu.cn
摘要:
为了提高整车燃油经济性,本文以某款SUV车型为研究对象,将仿真与试验相结合改善汽车行驶过程中的气动阻力系数。首先通过风洞试验确定对整车气动阻力有重要影响的区域或部件,其次对气动阻力系数贡献值较大的部件或区域进行减阻优化。结果表明,前轮阻风板、尾灯和尾翼对整车气动阻力系数贡献值较大。对前轮阻风板的改型,有效降低正压区面积以及减弱车轮干扰阻力;对尾灯和尾翼的优化设计,改善了尾部负压区,缩短了分离流在后窗上部的再附着的距离。基于本征正交分解方法进行局部流场信息的提取和分析可知,1阶与2阶模态主要构成了该SUV尾流场的关键流态。经试验与仿真验证,相比于初始方案,气动优化组合设计减阻率可达7.5%。本文为新一代SUV改型与升级换代提供了理论基础与技术支持。
邵景峰,左辉辉,胡兴军. 某SUV气动减阻优化及其流场机制[J]. 汽车工程, 2024, 46(2): 356-365.
Jingfeng Shao,Huihui Zuo,Xingjun Hu. Optimization of Aerodynamic Drag Reduction and Its Flow-Field Mechanism for a Sport Utility Vehicle (SUV)[J]. Automotive Engineering, 2024, 46(2): 356-365.
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