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TECHNICAL PAPERS

High Free-Steam Turbulence Effects on Endwall Heat Transfer for a Gas Turbine Stator Vane

[+] Author and Article Information
R. W. Radomsky, K. A. Thole

Mechanical Engineering Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060

J. Turbomach 122(4), 699-708 (Feb 01, 2000) (10 pages) doi:10.1115/1.1312807 History: Received February 01, 2000
Copyright © 2000 by ASME
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References

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Figures

Grahic Jump Location
Schematic of corner test section containing the stator vane cascade
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(a) Comparison of measured and predicted normalized mean streamwise and pitchwise velocity profiles at one-third chord upstream of the vane stagnation; (b) normalized rms levels of all three velocity components and integral length scale measured at one-third chord upstream of the vane stagnation point
Grahic Jump Location
(a) Comparison of measured streamwise boundary layer profiles at low and high free-stream turbulence levels plotted in terms of free-stream parameters; (b) comparison of measured streamwise boundary layer profiles at low and high free-stream turbulence levels plotted in terms of inner wall scaling parameters
Grahic Jump Location
(a) The rms levels of streamwise velocity fluctuations in the boundary layer in terms of inner wall scaling parameters; (b) rms levels of spanwise velocity fluctuations in the boundary layer in terms of inner wall scaling parameters
Grahic Jump Location
Leading edge horseshoe vortex with contours of streamwise velocity at: (a) Tu=0.6 percent10, and (b) Tu=19.5 percent
Grahic Jump Location
Contour levels of: (a) streamwise, (b) pitchwise, and (c) spanwise turbulence components at Tu=19.5 percent
Grahic Jump Location
Contour levels of normalized turbulent kinetic energy at: (a) Tu=0.6 percent, and (b) Tu=19.5 percent
Grahic Jump Location
Contour levels of: (a) normalized Reynolds shear stress, and (b) correlation coefficients at high free-stream turbulence
Grahic Jump Location
Probability density functions of: (a) streamwise, and (b) spanwise velocity components in the leading edge horseshoe vortex at a turbulence level of 0.6 percent
Grahic Jump Location
Probability density functions of: (a) streamwise, and (b) spanwise velocity components in the leading edge horseshoe vortex at a turbulence level of 19.5 percent
Grahic Jump Location
Contours of Stanton number (St×105) on the vane endwall at: (a) Tu=0.6 percent10, and (b) Tu=19.5 percent; (c) contours of Stanton number augmentation (St/St0) as a result of free-stream turbulence at 19.5 percent
Grahic Jump Location
Comparison of Tu=0.6 and 19.5 percent for: (a) Stanton numbers approaching the vane stagnation point, and (b) Stanton numbers that have been pitchwise averaged at a given axial location

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