Volume 28 Issue 9
Sep.  2013
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DAI Sheng-ji, HE Li-ming, DING Wei, JIN Tao, DU Hong-liang. Mechanism of film cooling efficiency enhancement by horseshoe plasma actuator[J]. Journal of Aerospace Power, 2013, 28(9): 1982-1987.
Citation: DAI Sheng-ji, HE Li-ming, DING Wei, JIN Tao, DU Hong-liang. Mechanism of film cooling efficiency enhancement by horseshoe plasma actuator[J]. Journal of Aerospace Power, 2013, 28(9): 1982-1987.

Mechanism of film cooling efficiency enhancement by horseshoe plasma actuator

  • Received Date: 2013-03-18
  • Publish Date: 2013-09-28
  • To disclose the basic mechanism of enhancing film cooling efficiency by plasma actuation produced from horseshoe plasma actuator,numerical simulation was carried out to investigate the flow field for two types of cylindrical holes with/without horseshoe plasma actuator.Results show that the jet flow has acquired expansibility by plasma actuation and the kidney-shaped vortices are changed significantly.With the pull inducement and actinic acceleration of plasma actuation,the coverage area and adherent of jet flow are improved,so the film cooling efficiency was enhanced.The film cooling efficiency of cylindrical hole with horseshoe plasma actuator is larger than that without horseshoe plasma actuator by about 165%(blowing ratio of 0.5),148%(blowing ratio of 1.0) and 500%(blowing ratio of 1.5), respectively.

     

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