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Effect of Internal Crossflow on Double Jet Film Cooling Holes of Helium Turbine Blades

[+] Author Affiliations
Xiao-kai Sun, Wei Peng, Jie Wang, Pei-xue Jiang

Tsinghua University, Beijing, China

Paper No. ICONE25-67058, pp. V006T08A072; 4 pages
doi:10.1115/ICONE25-67058
From:
  • 2017 25th International Conference on Nuclear Engineering
  • Volume 6: Thermal-Hydraulics
  • Shanghai, China, July 2–6, 2017
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5784-7
  • Copyright © 2017 by ASME

abstract

In the present study, effect of internal crossflow on double jet film cooling holes were investigated. In our previous study, four types of film cooling holes was investigated and the double jet holes showed better cooling efficiency. However, in practice, the coolant in high temperature turbine blade has a very high flow rate and turbulence, so it is necessary to take the effect of coolant supply condition at the hole entrance into consideration. So the influence of coolant supply condition was investigated, the plenum condition and the crossflow condition were studied to show the influence of the coolant supply condition. And the cylindrical hole was also investigated as comparison. The results showed that there is a profound effect of how the coolant is supplied to the hole on the film-cooling performance in the near hole region. Therefore, crossflow at the hole entry side has be taken into account when modeling film-cooling.

Copyright © 2017 by ASME

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