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RESEARCH PAPERS

Endwall Heat Transfer Measurements in a Transonic Turbine Cascade

[+] Author and Article Information
P. W. Giel

NYMA, Inc., Engineering Services Division, Brook Park, OH 44142

D. R. Thurman

U.S. Army Research Laboratory, NASA Lewis Research Center, Cleveland, OH 44135

G. J. Van Fossen, S. A. Hippensteele, R. J. Boyle

Internal Fluid Mechanics Division, NASA Lewis Research Center, Cleveland, OH 44135

J. Turbomach 120(2), 305-313 (Apr 01, 1998) (9 pages) doi:10.1115/1.2841407 History: Received February 01, 1996; Online January 29, 2008

Abstract

Turbine blade endwall heat transfer measurements are presented for a range of Reynolds and Mach numbers. Data were obtained for Reynolds numbers based on inlet conditions of 0.5 and 1.0 × 106 , for isentropic exit Mach numbers of 1.0 and 1.3, and for free-stream turbulence intensities of 0.25 and 7.0 percent. Tests were conducted in a linear cascade at the NASA Lewis Transonic Turbine Blade Cascade Facility. The test article was a turbine rotor with 136 deg of turning and an axial chord of 12.7 cm. The large scale allowed for very detailed measurements of both flow field and surface phenomena. The intent of the work is to provide benchmark quality data for CFD code and model verification. The flow field in the cascade is highly three dimensional as a result of thick boundary layers at the test section inlet. Endwall heat transfer data were obtained using a steady-state liquid crystal technique.

Copyright © 1998 by The American Society of Mechanical Engineers
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