Prediction of Tip-Leakage Losses in Axial Turbines

[+] Author and Article Information
M. I. Yaras, S. A. Sjolander

Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, Ontario, Canada K1S 5B6

J. Turbomach 114(1), 204-210 (Jan 01, 1992) (7 pages) doi:10.1115/1.2927987 History: Received February 07, 1990; Online June 09, 2008


Existing methods for predicting the tip-leakage losses in turbomachinery are based on a variety of assumptions, many of which have not been fully verified experimentally. Recently, several detailed experimental studies in turbine cascades have helped to clarify the physics of the flow and provide data on the evolution of the losses. The paper examines the assumptions underlying the prediction methods in the light of these data. An improved model for the losses is developed, using one of the existing models as the starting point.

Copyright © 1992 by The American Society of Mechanical Engineers
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