Experimental Investigation of Boundary Layer Behavior in a Simulated Low Pressure Turbine

[+] Author and Article Information
Rickey J. Shyne

NASA Glenn Research Center, Cleveland, OH 44135

Ki-Hyeon Sohn, Kenneth J. De Witt

University of Toledo, Toledo, OH 43606

J. Fluids Eng 122(1), 84-89 (Aug 30, 1999) (6 pages) doi:10.1115/1.483229 History: Received December 16, 1998; Revised August 30, 1999
Copyright © 2000 by ASME
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Comparison of variation of transition length Reynolds number with freestream turbulence levels
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Schematic of simulated test section (1 in.=2.54 cm)
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Smoke-wire flow visualization of separation bubble, grid 0, Re=50,000
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Pressure distribution on the test plate (Re=100,000),ΔCp=±0.005
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Flush-mounted hot-film signals for grid 2; (a) Re=100,000 and (b) Re=250,000,ΔE=±0.0004
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(a)–(c) Distribution of U/Uref for grids 0, 2 and 3 Re=100,000, (Uref=Ue at x=12.07 cm), ΔU=±0.00145
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(a) Intermittency profiles, Re=100,000 grid 0 (δ=0.125 cm), (b) grid 2 (δ=0.128 cm), and (c) grid 3 (δ=0.129 cm),ΔΓ=±1.45 percent
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Distribution of urms/Uref grid 0, Re=100,000, (Uref=Ue at x=12.07 cm), Δu=±0.00145
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(a) rms velocity profiles, Re=100,000 grid 0, (b) grid 2, and (c) grid 3, Δu=±0.00145
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Gaster’s two parameter bubble criteria



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