吉林大学学报(工学版) ›› 2009, Vol. 39 ›› Issue (增刊2): 279-0282.

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Effect of impinging jet angles on vehicle windshield defrosting performance

WANG Yong-zhen,GAO Qing,WANG Guo-hua,MA Chun-qiang,MA Ning   

  1. College of Automobile Engineering, Jilin University, Changchun 130022, Chin
  • Received:2008-09-21 Online:2009-09-30 Published:2009-09-30

Abstract:

Two-dimensional solidliquid melting phenomenon of frost on outer windshield surface with air impinging was simulated based on standard kε turbulence model by Fluent. The efficiency of windshield defrosting is affected by jet angle and sweep angle which determine the fluid flow patterns, average external temperature of windshield, liquid fraction and average liquidphase rate. The results indicate that the effect of jet angle and sweep angle on defrosting is nonmonotonous, and there is optimal scope of jet angle and sweep angle. The optimal jet angle is 60°and sweep angle is 10°under promissory conditions.

Key words: vehicle engineering, windshield, defrost, impinging jet

CLC Number: 

  • U463.85
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