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A Comparison of Cylindrical and Row Trenched Film-cooling Holes on a Combustor Endwall Surface at High Blowing Ratio

Journal of Advanced Research in Fluid Mechanics and Thermal Sciences
Volume 30 No. 1, February 2017, Pages 1-11

Ehsan Kianpour1,*, Nor Azwadi Che Sidik2,3
1Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
2Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia Kuala Lumpur, Malaysia
3Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia
*Corresponding author: ekianpour@pmc.iaun.ac.ir

KEYWORDS

Gas turbine engine, film-cooling, cylindrical hole, trench hole, dilution hole

ABSTRACT

This study was done to study the effects of cylindrical and row trenched cooling holes with alignment angle of ±60 degrees at blowing ratio of BR=3.18 on the film cooling effectiveness near the combustor end wall surface. In this study, a three-dimensional representation of a Pratt and Whitney gas turbine engine was simulated and analysed with a commercial finite volume package FLUENT 6.2.26. The analysis has been carried out with Reynolds-averaged Navier–Stokes turbulence model (RANS) on internal cooling passages. This combustor simulator was combined with the interaction of two rows of dilution jets, which were staggered in the streamwise direction and aligned in the spanwise direction. In comparison with the baseline case of cooling holes, the application of row trenched hole near the endwall surface doubled the performance of film-cooling effectiveness.

CITE THIS ARTICLE

MLA
Kianpour, Ehsan, et al. “A Comparison of Cylindrical and Row Trenched Film-cooling Holes on a Combustor Endwall Surface at High Blowing Ratio.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 30.1 (2017): 1-11.

APA
Kianpour, E., & Che Sidik, N. A. (2017). A Comparison of Cylindrical and Row Trenched Film-cooling Holes on a Combustor Endwall Surface at High Blowing Ratio. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 30(1), 1-11.

Chicago
Kianpour, Ehsan, and Nor Azwadi Che Sidik. “A Comparison of Cylindrical and Row Trenched Film-cooling Holes on a Combustor Endwall Surface at High Blowing Ratio.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 30, no. 1 (2017): 1-11.

Harvard
Kianpour, E. and Che Sidik, N.A., 2017. A Comparison of Cylindrical and Row Trenched Film-cooling Holes on a Combustor Endwall Surface at High Blowing Ratio. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 30(1), pp.1-11.

Vancouver
Kianpour, E, Che Sidik, NA. A Comparison of Cylindrical and Row Trenched Film-cooling Holes on a Combustor Endwall Surface at High Blowing Ratio. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences. 2017;30(1):1-11.

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