Volume 32 Issue 10
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Experimental and numerical studies on the film cooling characteristics of anisotropic composite plates[J]. Journal of Aerospace Power, 2017, 32(10): 2384-2393. doi: 10.13224/j.cnki.jasp.2017.10.011
Citation: Experimental and numerical studies on the film cooling characteristics of anisotropic composite plates[J]. Journal of Aerospace Power, 2017, 32(10): 2384-2393. doi: 10.13224/j.cnki.jasp.2017.10.011
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Experimental and numerical studies on the film cooling characteristics of anisotropic composite plates

doi: 10.13224/j.cnki.jasp.2017.10.011
  • Received Date: 2016-03-21
  • Publish Date: 2017-10-28
    Abstract
  • Experimental studies were carried out on the film cooling of the composite plates formatted through different weaving modes. An infrared radiation camera was used to capture the temperature distributions on hot side wall, and the effects of thermal conductivity, blowing ratio, and mainstream temperature on the overall cooling effectiveness were analyzed. Numerical simulations on the anisotropic composite plates with a single film hole were further conducted to explore the individual influence of thermal conductivity along the X, Y, and Z directions on the wall temperature distribution as well as the overall cooling effectiveness. Results show that the film cooling effectiveness increases with the enhancement of the blowing ratio and decreases with the increase of the main stream temperature. Among the three anisotropic composite plates, 25D composite plate produces the highest film cooling effectiveness while 3D composite plate gives the lowest cooling effectiveness. The increase of thermal conductivity along X and Z directions can improve the film cooling efficiency while the increase of thermal conductivity along Y direction has little influence on the film cooling efficiency.

     

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