Effect of impingement/effusion hole-area ratio on discharge coefficients of double cooling wall

Zhang, Chi and Xu, Quanhong and Zhao, Mengmeng and Lin, Yuzhen and Liu, Gaoen (2006) Effect of impingement/effusion hole-area ratio on discharge coefficients of double cooling wall. In: ASME Turbo Expo 2006, 8-11 May 2006, Barcelona, Spain.


This paper presents the experimental investigations on the discharge coefficients of impingement/effusion double flat wall with the impingement/effusion hole-area ratios of 1, 0.64 and 0.28. The impingement and effusion walls researched have equal numbers of holes per unit surface area in diamond arrays. The impingement holes are normal to the wall surface, the effusion holes are 30 degree to the wall surface in the sreamwise direction of the main flow, and both the impingement and effusion holes are arranged in the staggered mode. The CFD code was also applied to investigate the flow field within the impingement/effusion wall in detail. The experimental results indicated the relationship of the discharge coefficients of the single impingement wall, effusion wall and double wall with the overall pressure parameter of double wall in different impingement/effusion hole-area ratios, and were explained in the CFD results.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 21 Dec 2017 04:07
Last Modified: 01 Feb 2018 02:49
Uncontrolled Keywords: Cooling , Discharge coefficient
Fields of Research : 09 Engineering > 0901 Aerospace Engineering > 090101 Aerodynamics (excl. Hypersonic Aerodynamics)
Identification Number or DOI: 10.1115/GT2006-90612
URI: http://eprints.usq.edu.au/id/eprint/32788

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