Unsteady Transition in an Axial-Flow Turbine: Part 2—Cascade Measurements and Modeling

[+] Author and Article Information
J. S. Addison, H. P. Hodson

Whittle Laboratory, Cambridge University, Cambridge CB3 ODY United Kingdom

J. Turbomach 112(2), 215-221 (Apr 01, 1990) (7 pages) doi:10.1115/1.2927635 History: Received February 14, 1989; Online June 09, 2008


Part 1 of this paper reanalyzed previously published measurements from the rotor of a low-speed, single-stage, axial-flow turbine, which highlighted the unsteady nature of the suction surface transition process. Part 2 investigates the significance of the wake jet and the unsteady frequency parameter. Supporting experiments carried out in a linear cascade with varying inlet turbulence are described, together with a simple unsteady transition model explaining the features seen in the turbine.

Copyright © 1990 by The American Society of Mechanical Engineers
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