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RESEARCH PAPERS

Three-Dimensional Flow in a Low-Pressure Turbine Cascade at Its Design Condition

[+] Author and Article Information
H. P. Hodson, R. G. Dominy

Whittle Laboratory, Cambridge University, Cambridge, United Kingdom

J. Turbomach 109(2), 177-185 (Apr 01, 1987) (9 pages) doi:10.1115/1.3262083 History: Received January 20, 1986; Online November 09, 2009

Abstract

This paper describes an experimental study of the three-dimensional flow within a high-speed linear cascade of low-pressure turbine blades. Data were obtained using pneumatic probes and a surface flow visualization technique. It is found that in general, the flow may be described using concepts derived from previous studies of high-pressure turbines. In detail, however, there are differences. These include the existence of a significant trailing shed vortex and the interaction of the endwall fluid with the suction surface flow. At an aspect ratio of 1.8, the primary and secondary losses are of equal magnitude.

Copyright © 1987 by ASME
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