Volume 31 Issue 9
Sep.  2016
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Article Navigation >  Journal of Aerospace Power  > 2016  >  31(9): 2065-2072
ZHU Xing-dan, ZHANG Jing-zhou, TAN Xiao-ming, GUO Wen, SU Yun-liang. Numerical investigation of shaped-hole film cooling on turbine rotor blade[J]. Journal of Aerospace Power, 2016, 31(9): 2065-2072. doi: 10.13224/j.cnki.jasp.2016.09.003
Citation: ZHU Xing-dan, ZHANG Jing-zhou, TAN Xiao-ming, GUO Wen, SU Yun-liang. Numerical investigation of shaped-hole film cooling on turbine rotor blade[J]. Journal of Aerospace Power, 2016, 31(9): 2065-2072. doi: 10.13224/j.cnki.jasp.2016.09.003
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Numerical investigation of shaped-hole film cooling on turbine rotor blade

doi: 10.13224/j.cnki.jasp.2016.09.003

  • 1. Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;

  • 2. China Gas Turbine Establishment, Aviation Industry Corporation of China, Chengdu 610500, China

  • Received Date: 2015-01-07
  • Publish Date: 2016-09-28
    Abstract
  • Numerical simulations were conducted to investigate the shaped-hole film cooling on the pressure side of a turbine rotor under engine operating conditions, including the effects of blowing ratio and rotational Reynolds number. Results showed that the film jet was deflected towards the blade tip subjecting to the combined influences of centrifugal force and Coriolis force under rotational conditions, due to the change of the film vortex structure. The film jet was deflected towards the blade tip more sharply with the increase of rotational Reynolds number. The laterally-average cooling effectiveness slightly improved owing to more uniform film coverage. In the same rotational speed, the fan-shaped hole and console hole enabled to effectively restrain the film separation with high blowing ratios compared with the cylindrical hole. The laterally-average cooling effectiveness monotonously decreased downstream and increased with the blowing ratio. Besides, the film jet bent to the tip more notably with a small blowing ratio. As a result, the fan-shaped hole and console hole still have a pronounced advantage over the cylindrical hole under rotational conditions.

     

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