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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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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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

CLC Number: 

  • U467
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