主办:陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊:1976年

汽车实用技术 ›› 2023, Vol. 48 ›› Issue (24): 49-52.DOI: 10.16638/j.cnki.1671-7988.2023.024.010

• 设计研究 • 上一篇    

基于 A 柱倾角变化的货车空气动力学分析

李小华,姜 琼,余显忠*   

  1. 江铃汽车股份有限公司
  • 出版日期:2023-12-30 发布日期:2023-12-30
  • 通讯作者: 余显忠
  • 作者简介:李小华(1981-),男,高级工程师,研究方向为空气动力学,E-mail:xli17@jmc.com.cn。 通信作者:余显忠(1971-),男,正高级工程师,研究方向为 CAE/CFD,E-mail:xyu6@jmc.com.cn。
  • 基金资助:
    国家重点研发计划(2022YFB2503505)。

Aerodynamic Analysis of a Truck Based on the Change of A Pillar-angle

LI Xiaohua, JIANG Qiong, YU Xianzhong*   

  1. Jiangling Motors Limited Company
  • Online:2023-12-30 Published:2023-12-30
  • Contact: YU Xianzhong

摘要: 为了识别驾驶室 A 柱倾角对货车风阻系数的影响,采用变形技术模拟出货车驾驶室 A 柱倾角变化,并用计算流体动力学(CFD)方法计算出了不同 A 柱倾角下的小卡及小轻卡风 阻系数。研究结果表明,在 22~38°范围内,A 柱倾角越大,小卡车型的风阻系数越小,每 度约降低风阻系数 8 cts;在 13~22°范围内,A 柱倾角越大,小轻卡车型风阻系数越大,每 度约增加风阻系数 3 cts。文章针对轻型货车总结出,A 柱倾角和风阻系数的关系,为轻型货 车的平台化设计提供了设计依据。

关键词: 轻型货车;A 柱倾角;空气动力学;风阻系数

Abstract: In order to identify the influence of the A pillar-angle to the drag coefficient on truck, the deformation technology is used to fit the change of A pillar-angle, and the drag coefficient of small truck and small light truck under different A pillar-angles is simulated by computational fluid dynamics (CFD) method. The results show that in the range of 22~38°, the greater of the A pillar- angle, the smaller of the drag coefficient on small truck, and the value of drag coefficient almost decreases by 8cts for every degree increase. In the range of 13~22°, the greater of the A pillar angle, the greater of the drag coefficient on small light truck, and the drag coefficient almost increases by 3cts for every degree increase. This paper comes to a conclusion to the relationship of A pillar-angle and drag coefficient on truck, providing design guidelines for truck platform development.

Key words: Light truck; A pillar-angle; Aerodynamics; Drag coefficient