Scaling of Performance for Varying Density Ratio Coolants on an Airfoil With Strong Curvature and Pressure Gradient Effects

[+] Author and Article Information
Marcia I. Ethridge, J. Michael Cutbirth, David G. Bogard

Mechanical Engineering Department, The University of Texas at Austin, Austin, TX 78712

J. Turbomach 123(2), 231-237 (Feb 01, 2000) (7 pages) doi:10.1115/1.1343457 History: Received February 01, 2000
Copyright © 2001 by ASME
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Turbine vane pressure distribution
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Lateral average effectiveness, Tu=0.5 percent,DR=1.1
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Lateral average effectiveness, Tu=0.5 percent,DR=1.6
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Comparison of laterally averaged effectiveness with previous flat plate and curved wall studies at x/d=15 and Tu=0.5 percent
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Correlation of centerline effectiveness with: (a) M and (b) I, and laterally averaged effectiveness with (c) M and (d) I, for DR=1.1 and 1.6; Comparisons at x/d=3 and 15 with Tu=0.5 percent
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Contour plots of local adiabatic effectiveness: (a) DR=1.1,M=0.45(I=0.19),Tu=0.5 percent; (b) DR=1.6,M=0.44(I=0.12),Tu=0.5 percent
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Comparison of adiabatic effectiveness for low (Tu=0.5 percent) and high (Tu=20 percent) mainstream turbulence levels at x/d=3 and 15: (a) and (b) for DR=1.1, and (c) and (d) DR=1.6




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