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TECHNICAL PAPERS

Combustor Turbine Interface Studies—Part 1: Endwall Effectiveness Measurements

[+] Author and Article Information
W. F. Colban, K. A. Thole

Mechanical Engineering Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

G. Zess

Pratt and Whitney, East Hartford, CT 06108

J. Turbomach 125(2), 193-202 (Apr 23, 2003) (10 pages) doi:10.1115/1.1561811 History: Received January 16, 2002; Online April 23, 2003
Copyright © 2003 by ASME
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References

Figures

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Schematic of the wind tunnel facility
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Illustration of the film-cooling holes relative to the vane location (a); slot geometry (b), and film cooling-hole configuration (c)
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Total pressure profiles measured on top of the step at the exit of the combustor indicating the relative effect of the panel flows (a and b) and the dilution holes (c)
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Total pressure contours across the vane passage (midpitch to midpitch) measured at combustor exit
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Total pressure profiles measured at the combustor exit for the five cases investigated in this study
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Flow uniformity of the mean and turbulent velocities measured at the midspan across both the inside and outside vane passages
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Static pressure distribution along the vane midspan for the five cases investigated
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Adiabatic effectiveness contours for case 1
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Adiabatic effectiveness contours for case 2
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Adiabatic effectiveness contours for case 3
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Adiabatic effectiveness contours for case 5
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Adiabatic effectiveness contours for case 5
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Flow field prediction for case 1 indicating injestion of flow above the step into the slot 13
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Pitchwise-averaged adiabatic effectiveness levels  
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Area-averaged adiabatic effectiveness levels
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Comparison of pitchwise-averaged effectiveness

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