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TECHNICAL PAPERS

Effects of Bulk Flow Pulsations on Film Cooling With Compound Angle Holes: Heat Transfer Coefficient Ratio and Heat Flux Ratio

[+] Author and Article Information
In Sung Jung, Joon Sik Lee

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

P. M. Ligrani

Convective Heat Transfer Laboratory, Department of Mechanical Engineering, University of Utah, Salt Lake City, UT 84112-9208

J. Turbomach 124(1), 142-151 (Feb 01, 2001) (10 pages) doi:10.1115/1.1400110 History: Received February 01, 2001
Copyright © 2002 by ASME
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References

Figures

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Schematic diagrams of: (a) the experimental apparatus used for heat transfer coefficient measurements, (b) the film hole geometry, and (c) the test surface, including the coordinate system
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Normalized, phase-averaged static pressure difference between the injectant plenum and the freestream: (a) f=8 Hz, (b) f=36 Hz
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Local surface heat transfer coefficient ratio distributions with and without imposed bulk flow pulsations at f=36 Hz for m=0.5: (a) β=0 deg, (b) β=30 deg, (c) β=60 deg, (d) β=90 deg
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Flow visualization results in an illuminated spanwise-normal plane located at x/D=4.3 for β=30-deg compound angle holes with m=0.7, (a) f=0 Hz, (b) f=0.5 Hz
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Spatially averaged surface heat transfer coefficient ratios with imposed bulk flow pulsations at f of 0 Hz, 8 Hz, and 36 Hz for m=0.5: (a) β=0 deg, (b) β=30 deg, (c) β=60 deg, (d) β=90 deg
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Normalized spatially averaged surface heat transfer coefficient ratios as dependent upon coolant Strouhal number Src and orientation angle β
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Local surface heat flux ratio distributions with and without imposed bulk flow pulsations at f=36 Hz for m=0.5: (a) β=0 deg, (b) β=30 deg, (c) β=60 deg, (d) β=90 deg
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Spatially-averaged surface heat flux ratios with imposed bulk flow pulsations at f of 0 Hz, 8 Hz, and 36 Hz for m=0.5: (a) β=0, (b) β=30, (c) β=60, (d) β=90 deg
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Normalized spatially averaged surface heat flux ratios as dependent upon coolant Strouhal number Src and orientation angle β

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