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TECHNICAL PAPERS

Detailed Boundary Layer Measurements on a Turbine Stator Vane at Elevated Freestream Turbulence Levels

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

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

J. Turbomach 124(1), 107-118 (Feb 01, 2001) (12 pages) doi:10.1115/1.1424891 History: Received February 01, 2001
Copyright © 2002 by ASME
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References

Figures

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Schematic of stator vane test section
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Location of boundary layer measurements
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Profiles of: (a) normalized streamwise, U/Uinlet, and pitchwise, V/Uinlet, velocities at various turbulence levels and measurement techniques, (b) streamwise (urms/Uinlet), pitchwise (vrms/Uinlet) and spanwise (wrms/Uinlet) turbulence levels, and (c) integral and dissipation length scales measured at X/C=−0.33
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Comparison of inviscid velocity distribution from static pressure and LDV boundary layer measurements to the low-speed inviscid CFD prediction
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Comparison of measured: (a) boundary layer thickness, δ/C, and (b) shape factor, H, at turbulence levels of 0.6 percent and 19.5 percent with predictions given by Thwaites 19
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Comparison of measured Stanton number and friction coefficients on: (a) the pressure surface, and (b) the suction surface at Tu=0.6 percent
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Comparison of measured Stanton number and friction coefficients on: (a) the pressure surface, (b) the suction surface at Tu=19.5 percent, and (c) friction coefficient, Cf/Cfo, and Stanton number augmentation, St/Sto, at turbulence levels of 10 percent and 19.5 percent at Re=2.3×105
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Boundary layer profiles on the pressure surface at Tu=0.6 percent plotted using: (a) freestream parameters, (b) inner wall scaling parameters, and (c) boundary layer profiles of streamwise (urms+) and normal (vrms+) rms levels
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Boundary layer profiles on the suction surface at Tu=0.6 percent plotted using: (a) freestream parameters, and (b) inner wall scaling parameters
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Profiles of: (a) streamwise (urms+) (b) normal (vrms+), and (c) Reynolds shear stress levels on the suction surface at Tu=0.6 percent plotted using inner wall scaling parameters
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Boundary layer profiles on the pressure surface at Tu=19.5 percent plotted using: (a) freestream parameters, and (b) inner wall scaling parameters
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Boundary layer profiles of: (a) streamwise (urms+) and normal (vrms+) rms levels, and (b) Reynolds shear stress on the pressure surface at Tu=19.5 percent plotted using inner wall scaling parameters
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Boundary layer profiles on the suction surface at Tu=19.5 percent plotted using; (a) freestream parameters, and (b) inner wall scaling parameters
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Boundary layer profiles of: (a) streamwise (urms+) and normal (vrms+) rms levels, and (b) Reynolds shear stress, on the suction surface at Tu=19.5 percent plotted using inner scaling

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