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TECHNICAL PAPERS

Effects of Bulk Flow Pulsations on Phase-Averaged and Time-Averaged Film-Cooled Boundary Layer Flow Structure

[+] Author and Article Information
I.-S. Jung, J. S. Lee

Turbo and Power Machinery Research Center, Department of Mechanical Engineering, Seoul National University, Seoul 151-742, Korea

P. M. Ligrani

Convective Heat Transfer Laboratory, Department of Mechanical Engineering, 50 S. Central Campus Drive, University of Utah, Salt Lake City, UT 84112

J. Fluids Eng 123(3), 559-566 (Mar 05, 2001) (8 pages) doi:10.1115/1.1383972 History: Received August 31, 2000; Revised March 05, 2001
Copyright © 2001 by ASME
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References

Figures

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Schematic drawings of (a) test section and coordinate system and (b) injection hole geometry and coordinate system
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Typical timewise variations of: (a) freestream velocity, (b) injectant velocity, and (c) injectant to freestream velocity ratio, as the injectant velocity waveform is phase-shifted relative to the freestream velocity waveform. Phase 0: 0 degrees or 0 π phase shift. Phase 1: 90 degrees or π/2 phase shift. Phase 2: 180 degrees or π phase shift.
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Phase-averaged streamwise velocity profiles at x/d=5 and z/d=0 for m=0.5,l/d=1.6, and f=2 Hz
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Phase-averaged streamwise velocity profiles at x/d=5 and z/d=0 for m=0.5,l/d=1.6, and f=16 Hz
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Phase-averaged streamwise velocity profiles at x/d=5 and z/d=0 for m=0.5,l/d=1.6, and f=32 Hz
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Time-averaged streamwise velocity profiles at x/d=5,m=0.5,l/d=1.6, and bulk flow pulsation frequencies f of 0 Hz, 2 Hz, 16 Hz, and 32 Hz. (a) z/d=0, (b) z/d=0.5, (c) z/d=1.0, (d) z/d=1.5.
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Time-averaged normal component velocity profiles at x/d=5 and z/d=0, for m=0.5,l/d=1.6, and bulk flow pulsation frequencies f of 0 Hz, 2 Hz, 16 Hz, and 32 Hz. Symbols defined in Fig. 6.
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Time-averaged spanwise component velocity profiles at x/d=5 and z/d=0, for m=0.5,l/d=1.6, and bulk flow pulsation frequencies f of 0 Hz, 2 Hz, 16 Hz, and 32 Hz. Symbols defined in Fig. 6.
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Time-averaged, normalized profiles of the longitudinal Reynolds normal stress at x/d=5,m=0.5,l/d=1.6, and bulk flow pulsation frequencies f of 0 Hz, 2 Hz, 16 Hz, and 32 Hz. (a) z/d=0, (b) z/d=0.5, (c) z/d=1.0, (d) z/d=1.5.
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Time-averaged, normalized profiles of the normal component of Reynolds normal stress at x/d=5 and z/d=0, for m=0.5,l/d=1.6, and bulk flow pulsation frequencies f of 0 Hz, 2 Hz, 16 Hz, and 32 Hz. Symbols defined in Fig. 9.
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Time-averaged, normalized profiles of the spanwise component of Reynolds normal stress at x/d=5 and z/d=0, for m=0.5,l/d=1.6, and bulk flow pulsation frequencies f of 0 Hz, 2 Hz, 16 Hz, and 32 Hz. Symbols defined in Fig. 9.
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Time-averaged, normalized profiles of the Reynolds shear stress uv at x/d=5 and z/d=0, for m=0.5,l/d=1.6, and bulk flow pulsation frequencies f of 0 Hz, 2 Hz, 16 Hz, and 32 Hz. Symbols defined in Fig. 9.
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Time-averaged, normalized profiles of the Reynolds three-dimensional shear stress uw at x/d=5 and z/d=0, for m=0.5,l/d=1.6, and bulk flow pulsation frequencies f of 0 Hz, 2 Hz, 16 Hz, and 32 Hz. Symbols defined in Fig. 9.

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