Volume 22 Issue 9
Sep.  2007
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Article Navigation >  Journal of Aerospace Power  > 2007  >  22(9): 1417-1422
SONG Shuang-wen, YANG Wei-hua, HU Hao-sheng, ZHANG Jing-zhou. Experimental study of the heat transfer characteristics of combined cooling of impingement+reversed convection+film[J]. Journal of Aerospace Power, 2007, 22(9): 1417-1422.
Citation: SONG Shuang-wen, YANG Wei-hua, HU Hao-sheng, ZHANG Jing-zhou. Experimental study of the heat transfer characteristics of combined cooling of impingement+reversed convection+film[J]. Journal of Aerospace Power, 2007, 22(9): 1417-1422.
shu

Experimental study of the heat transfer characteristics of combined cooling of impingement+reversed convection+film

  • 1.

    College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

  • 2.

    China Aviatio n Powerplant Research Instit ute, Zhuzho u 412002, China

  • 3.

    College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

  • Received Date: 2007-03-26
  • Rev Recd Date: 2007-06-22
  • Publish Date: 2007-09-28
    Abstract
  • In order to study the heat transfer characteristics of combined cooling of impingement +reversed convection +film on a flame tube wall,6 test pieces of different geometry were designed.The heat transfer characteristics of the combined cooling were studied by the experimental method using infrared cameras.The experimental results shows that the cooling effectiveness increases with the increase of blowing ratio;between the impingement position and film exit,the cooling effectiveness increases in the direction of main flow,and at a given position the cooling effectiveness decreases with the increase of distance between impingement position and the film exit;beyond the impingement position,the cooling effectiveness decreases in the direction of main flow.At the same wall position,the cooling effectiveness increases with the decrease of the impingement distance.

     

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