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International Heat Transfer Conference 13
Graham de Vahl Davis (open in a new tab) School of Mechanical and Manufacturing Engineering, University of New South Wales, Kensington, NSW, Australia
Eddie Leonardi (open in a new tab) Computational Fluid Dynamics Research Laboratory, School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, Australia 2052

ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

INTERNAL BLADE COOLING: THE CINDERELLA OF C&EFD RESEARCH IN GAS TURBINES

page 32
DOI: 10.1615/IHTC13.p30.170
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SINOPSIS

The paper reviews experimental and computational research directed at improving the internal cooling of gas-turbine blades. While not the most glamorous area of gas-turbine aerothermodynamics, the improvements in overall thermal efficiency directly attributable to internal blade cooling arguably outstrip those achieved in any other area of jet-engine research. The cooling arrangements within a blade adopt three cooling strategies: impinging leading-edge jets, serpentine passages for the mid-blade section and pin fins near the trailing edge. Progress in each of these areas is examined. While, in the second of these areas, CFD studies have now become an essential weapon in the designer's armoury, the other two still rely very heavily on experimental research. Possible further developments are discussed.

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