Modeling the Air-Cooled Gas Turbine: Part 2—Coolant Flows and Losses

[+] Author and Article Information
J. B. Young, R. C. Wilcock

Cambridge University Engineering Department, Trumpington Street, Cambridge, CB2 1PZ, United Kingdom

J. Turbomach 124(2), 214-221 (Apr 09, 2002) (8 pages) doi:10.1115/1.1415038 History: Received February 01, 2001; Online April 09, 2002
Copyright © 2002 by ASME
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Schematic diagram of a cooled gas turbine stage
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Simplified blade cooling model
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Notation for the heat transfer model (stators and rotors)
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Sensitivity of cooling flowrate to changes in operating conditions
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Coolant/mainstream total pressure ratio as a function of mainstream Mach number and momentum flux ratio I
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Fluid friction and heat transfer in a one-dimensional flow
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Definition sketch for mixing analysis
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Variation of cooling losses with cooling flowrate




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