Volume 22 Issue 2
Feb.  2007
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Article Navigation >  Journal of Aerospace Power  > 2007  >  22(2): 216-221
LIU Zhen-xiong, MAO Jun-kui, GUO Wen, JIANG Hefu. Experimental investigation of a double-decker jet impingement/film structure's cooling coefficient[J]. Journal of Aerospace Power, 2007, 22(2): 216-221.
Citation: LIU Zhen-xiong, MAO Jun-kui, GUO Wen, JIANG Hefu. Experimental investigation of a double-decker jet impingement/film structure's cooling coefficient[J]. Journal of Aerospace Power, 2007, 22(2): 216-221.
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Experimental investigation of a double-decker jet impingement/film structure's cooling coefficient

  • 1.

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

  • 2.

    China Gas Turbine Establishment, Chengdu 610500, China

  • Received Date: 2006-02-09
  • Rev Recd Date: 2006-05-03
  • Publish Date: 2007-02-28
    Abstract
  • Experiments were conducted out to investigate cooling coefficient of a lamellar double-decker jet impingement/film structure.Blowing rate M,the ratio of the jet impingement distance to the diameter of the jet hole H/d,and the ratio of the distance between the jet hole and film hole to the diameter of the jet hole P/d were changed to study the rules of local cooling coefficient varying with these parameters.All the results show that higher cooling coefficient was achieved under larger blowing rate conditions.And there exists a proper range of H/d and P/d,which can result in a maximum cooling coefficient.It is verified that when H/d=0.5 and P/d=4,the maximum cooling coefficient can be achieved.

     

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