Volume 35 Issue 7
Jul.  2009
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Zhao Zhenming, Wu Hongwei, Ding Shuiting, et al. Experimental investigation of rotation number effect on film cooling over a convex surface[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(7): 838-841. (in Chinese)
Citation: Zhao Zhenming, Wu Hongwei, Ding Shuiting, et al. Experimental investigation of rotation number effect on film cooling over a convex surface[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(7): 838-841. (in Chinese)

Experimental investigation of rotation number effect on film cooling over a convex surface

  • Received Date: 18 Jun 2008
  • Publish Date: 31 Jul 2009
  • Experimental study was conducted to investigate the influence of rotation number ( Rt=ωD/u ) on the film cooling performance over a convex surface. Measurements of film cooling effectiveness η ad and heat transfer coefficient h f were presented for single film hole. Thermochromic liquid crystal (TLC) was used to obtain the temperature distributions on the curved surface. The results show that ① an obviously deflection occurs under the rotating condition;② with the increase of rotation number, the film cooling effectiveness decrease while the heat transfer coefficient increase;③ a reattachment phenomenon can be observed in the rotating condition.

     

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