吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (5): 1373-1378.doi: 10.13229/j.cnki.jdxbgxb201705007

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地面效应模拟对环境风洞中车辆冷却系统试验影响的数值模拟

王宏朝, 单希壮, 杨志刚   

  1. 同济大学 上海地面交通工具风洞中心,上海 201804
  • 收稿日期:2016-05-28 出版日期:2017-09-20 发布日期:2017-09-20
  • 通讯作者: 单希壮(1961-),男,研究员,博士.研究方向:空气动力学.E-mail:xizhuang.shan@sawtc.com
  • 作者简介:王宏朝(1987-),男,博士研究生.研究方向:整车热管理.E-mail:whcjordan123@163.com
  • 基金资助:
    国家自然科学基金项目(11502171); 国家国际技术合作专项项目(2014DFA10610)

Numerical simulation of the influence of ground effect simulation on vehicle cooling system experiment in climate wind tunnel

WANG Hong-chao, SHAN Xi-zhuang, YANG Zhi-gang   

  1. Shanghai Automotive Wind Tunnel Center, Tongji University, Shanghai 201804, China
  • Received:2016-05-28 Online:2017-09-20 Published:2017-09-20

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摘要： 针对目前环境风洞普遍缺少地面模拟的情况,通过数值模拟技术,建立1∶1环境风洞模型及整车模型,分析了地面效应对车辆冷却系统环境风洞试验的影响。结果表明:环境风洞在引入地面模拟后,车身底部的流场分布发生变化,主要表现在地面边界层的厚度减少,通过车身底部的空气流速增大,由此降低了发动机舱冷却气流出口的压力,使得通过散热器的冷却空气质量流量增加1.2%左右。

关键词: 车辆工程, 地面效应模拟, 环境风洞, 冷却系统, 数值模拟

Abstract: Currently climate wind tunnel lacks the information of ground simulation. To overcome this problem, based on numerical simulation, a 1∶1 scaled model of the climate wind tunnel and passenger car was created. Then, the ground effect on the vehicle cooling system experiment in climate wind tunnel was investigated. Results indicate that, the introduction of a single moving belt leads to the difference of the flow field distribution in the vehicle's underbody. The thickness of the ground boundary layer decreases and the underbody airflow velocity increases accordingly, which reduces the total pressure of the cooling airflow outlet, resulting in the mass airflow passing through the radiator increases by approximately 1.2%.

Key words: vehicle engineering, ground effect simulation, climate wind tunnel, cooling system, numerical simulation

中图分类号: 

  • U467
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