Vortical Gust Response of a Low-Solidity Vane Row Including Steady Loading and Dynamic Stall Effects

[+] Author and Article Information
G. H. Henderson, S. Fleeter

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47906-1288

J. Turbomach 119(3), 482-490 (Jul 01, 1997) (9 pages) doi:10.1115/1.2841147 History: Received February 25, 1994; Online January 29, 2008


The effects of high steady loading and separated flow on the unsteady aerodynamic response of turbomachine blade rows are experimentally investigated. This is accomplished utilizing a unique single-stage turbomachine research facility in which the flow is not generated by the blading but rather by an additional fan. Thus, for a particular stator incidence angle, the steady or mean stator aerodynamic performance were determined in a completely steady flow with no rotor and also with unsteady flow generated by a rotor composed of perforated plates at the same mean operating condition, thereby identifying the stator vane row dynamic stall conditions. The unsteady aerodynamic response of the very low-solidity stator vane row is then investigated over a range of incidence angle values, including attached and separated flows with dynamic stall.

Copyright © 1997 by The American Society of Mechanical Engineers
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