汽车工程

汽车工程 ›› 2019, Vol. 41 ›› Issue (6): 688-695.doi: 10.19562/j.chinasae.qcgc.2019.06.012

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厢式货车气动减阻装置的减阻效果研究*

许建民1,2, 范健明1   

  1. 1.厦门理工学院机械与汽车工程学院,厦门 361024;
    2.福建省客车及特种车辆研发协同创新中心,厦门 361024
  • 收稿日期:2018-06-08 发布日期:2019-07-03
  • 通讯作者: 许建民,副教授,博士,E-mail:xujianmin1020@163.com
  • 基金资助:
    国家自然科学基金(51375411)、福建省科技创新平台项目(2016H2003)、福建省中青年教师教育科研项目(科技)(JT180445)和厦门理工学院高层次人才项目(YKJ16029R)资助。

A Research on Drag Reduction Effect of AerodynamicDrag Reducing Device for Van Truck

Xu Jianmin1,2, Fan Jianming1   

  1. 1.School of Mechanical and Automotive Engineering, Xiamen University of Technology, Xiamen 361024;
    2.Fujian Collaborative Innovation Center for R&D of Coach and Special Vehicle, Xiamen 361024
  • Received:2018-06-08 Published:2019-07-03

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摘要： 为降低某厢式货车的气动阻力系数,设计了不同形状的仿生导流罩、尾部减阻装置和仿生非光滑表面结构,分析不同单一减阻装置对整车风阻系数的影响,详细探讨了不同单一减阻装置的减阻机理。最后研究了不同单一减阻装置同时加装在同一货车模型的综合减阻效果。结果表明:仿生导流罩的减阻效果要好于传统导流罩,随着导流罩侧裙延伸长度的增加,货车整车阻力系数逐渐变小。当底部导流板倾角θ=45°时模型的阻力系数获得最小值。基于生物表面仿生减阻理论在货车侧面布置半球面凹坑和半椭球面凹坑均具有较好的减阻效果。复合减阻装置货车模型的最大减阻率达22.7%。

关键词: 厢式货车, 仿生导流罩, 尾部减阻装置, 仿生非光滑表面, 复合减阻装置

Abstract: In order to reduce the aerodynamic drag coefficient of a van type truck, different types of bionic cab spoiler, tail fairing and bionic non-smooth surface structure are designed. Then their effects on the aerodynamic drag coefficient of the truck are analyzed, with their drag reduction mechanism discussed in detail. Finally, the overall drag reduction effect is studied with different drag reduction devices installed on the same truck model. The results show that the drag reduction effect of bionic cab spoiler is better than that of traditional one, and with the increase of the extension length of cab spoiler‘s side skirt, the drag coefficient of the truck gradually reduces. When the inclination angle of the lower deflector of tail fairing is around 45°, the drag coefficient of the model gets a minimum value. Based on the bionic drag reduction theory for biological surface, both semi-spherical pits and semi-ellipsoidal pits arranged on the side of the truck have good drag reduction effect. The combination of three types of drag reducing devices on truck model can get a drag reduction rate of up to 22.7%.

Key words: van type truck, bionic cab spoiler, tail fairing, bionic non-smooth surface, combined drag reducing device