Volume 30 Issue 11
Nov.  2015
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SHI Hui, LI Liang, FENG Zhen-ping. Research of fouling deposition influence on heat transfer of blade surface[J]. Journal of Aerospace Power, 2015, 30(11): 2616-2622. doi: 10.13224/j.cnki.jasp.2015.11.008
Citation: SHI Hui, LI Liang, FENG Zhen-ping. Research of fouling deposition influence on heat transfer of blade surface[J]. Journal of Aerospace Power, 2015, 30(11): 2616-2622. doi: 10.13224/j.cnki.jasp.2015.11.008

Research of fouling deposition influence on heat transfer of blade surface

doi: 10.13224/j.cnki.jasp.2015.11.008
  • Received Date: 2014-04-10
  • Publish Date: 2015-11-28
  • Two turbine blades, the MARKⅡ vane and a high pressure turbine vane, were chosen in the study. The former blade surface was smooth and the latter was rough, covered with evenly spaced truncated cones. The CFD numerical simulation technique was used to calculate the cascade characteristics and blade surface heat transfer distribution. The reliability of the computational method was validated by comparing the calculated results with the experimental data. The results show that accurate prediction of the transition location and appropriate y+ value are key to calculate the heat transfer characteristics of the blade surfaces. The predicted results by using the shear stress transport(SST)transition model are most satisfactory. In the calculation of rough blade, the roughness model was verified and then fouling deposition effects on heat transfer characteristics were analyzed in detail. It is shown that the heat transfer coefficient on the rough blade surface is enlarged with the increase of surface roughness, due to the enhancement of near-wall turbulence.

     

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