基于A柱倾角变化的货车空气动力学分析  

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

作　　者：李小华[1] 姜琼[1] 余显忠[1] LI Xiaohua;JIANG Qiong;YU Xianzhong(Jiangling Motors Limited Company,Nanchang 330010,China)

机构地区：[1]江铃汽车股份有限公司,江西南昌330010

出　　处：《汽车实用技术》2023年第24期49-52,共4页Automobile Applied Technology

基　　金：国家重点研发计划(2022YFB2503505)。

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。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.

关 键 词：轻型货车 A柱倾角 空气动力学 风阻系数 

分 类 号：U469.21[机械工程—车辆工程]