Surface Roughness Effects on External Heat Transfer of a HP Turbine Vane

[+] Author and Article Information
M. Stripf, A. Schulz, S. Wittig

Lehrstuhl und Institut für Thermische Strömungsmaschinen, Universität Karlsruhe (TH), Kaiserstr. 12, 76128 Karlsruhe, Germany

J. Turbomach 127(1), 200-208 (Feb 09, 2005) (9 pages) doi:10.1115/1.1811101 History: Received October 01, 2003; Revised March 01, 2004; Online February 09, 2005
Copyright © 2005 by ASME
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Schematic view of the hot wind tunnel
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Three vane linear cascade
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Distribution of acceleration parameter K
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Influence of roughness on Nusselt number distribution for different Re1 and Tu1
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Stanton numbers over surface length Reynolds numbers
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Stagnation point heat transfer
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Suction-side Stanton number distributions with trip wire at s/c=0.24
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Stanton number data at s/c=0.6 for Tu1=4% and correlations from Kays and Crawford




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