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TECHNICAL PAPERS

Toward Improved Film Cooling Prediction

[+] Author and Article Information
G. Medic, P. A. Durbin

Mechanical Engineering Department, Stanford University, Stanford, CA 94305-3030

J. Turbomach 124(2), 193-199 (Apr 09, 2002) (7 pages) doi:10.1115/1.1458021 History: Received March 20, 2001; Revised October 15, 2001; Online April 09, 2002
Copyright © 2002 by ASME
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References

Figures

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Geometry of cooling holes
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Detail of the computational mesh, suction side cooling holes
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Detail of the computational mesh, pressure side cooling holes
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Detail of velocity vectors in the plenum-tube junction region, computations with v2−f model
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Detail of turbulent intensity contours in the plenum-tube junction region, computations with v2−f model
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Temperature and location of characteristic cross sections, m=1.0
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Heat transfer coefficient, ht (W/m2K), suction side cooling, m=0.45
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Heat transfer coefficient, ht (W/m2K), suction side cooling, m=0.6
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Heat transfer coefficient, ht (W/m2K), suction side cooling, m=1.0
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Heat transfer coefficient, ht (W/m2K), pressure side cooling, m=3.3
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Heat transfer coefficient, ht (W/m2K), pressure side cooling, m=4.25
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Temperature contours computed with various turbulence models, cross section A, pressure side cooling, high blowing ratio m=4.25 (blade surface at the top)
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Temperature contours computed with different models, cross section B, pressure side cooling, high blowing ratio m=4.25 (blade surface at the top)
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Velocity magnitude with different models, cross section C, pressure side cooling, high blowing ratio m=4.25 (cascade inflow Uinflow=100 m/s)
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Temperature contours computed with different turbulence models, cross section A, suction side cooling, high blowing ratio m=1.0
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Temperature contours computed with different models, cross section B, suction side cooling, high blowing ratio m=1.0
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Turbulence intensity computed with various models, cross section A, suction side cooling, high blowing ratio m=1.0
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Turbulence intensity computed with various models, cross section B, suction side cooling, high blowing ratio m=1.0
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Velocity magnitude with different models, cross section C, suction side cooling, high blowing ratio m=1.0 (cascade inflow Uinflow=100 m/s)
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Temperature and location of characteristic cross sections, m=4.25
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Heat transfer coefficient, ht (W/m2K), pressure side cooling, m=1.75

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