A numerical study on the effects of sister holes locations on film cooling performance is presented. This includes the change of the location of the individual discrete sister holes in the streamwise and spanwise directions, where each one of these directions includes 9 different locations, The simulations are performed using three-dimensional Reynolds-Averaged Navier Stokes analysis with the realizable k–ε model combined with the standard wall function. The variation of the sister holes in the streamwise direction provides similar film cooling performance as the base case for both blowing ratios of 0.5 and 1. On the other hand, the spanwise variation of the sister holes’ location has a more prominent effect on the effectiveness. In some cases, as a result of the anti-vortices generated from the sister holes and the repositioning of the sister holes in the spanwise direction, the jet lift-off effect notably decreases and more volume of coolant is distributed in the spanwise direction.
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ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
June 16–20, 2014
Düsseldorf, Germany
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4572-1
PROCEEDINGS PAPER
A CFD-Based Parametric Study on Modification of Discrete Sister Holes Location for the Film Cooling Flow
Siavash Khajehhasani,
Siavash Khajehhasani
Ryerson University, Toronto, ON, Canada
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Bassam Jubran
Bassam Jubran
Ryerson University, Toronto, ON, Canada
Search for other works by this author on:
Siavash Khajehhasani
Ryerson University, Toronto, ON, Canada
Bassam Jubran
Ryerson University, Toronto, ON, Canada
Paper No:
GT2014-25970, V05BT13A033; 11 pages
Published Online:
September 18, 2014
Citation
Khajehhasani, S, & Jubran, B. "A CFD-Based Parametric Study on Modification of Discrete Sister Holes Location for the Film Cooling Flow." Proceedings of the ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. Volume 5B: Heat Transfer. Düsseldorf, Germany. June 16–20, 2014. V05BT13A033. ASME. https://doi.org/10.1115/GT2014-25970
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