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RESEARCH PAPERS

An Inviscid Blade-to-Blade Prediction of a Wake-Generated Unsteady Flow

[+] Author and Article Information
H. P. Hodson

Whittle Laboratory, Cambridge University Engineering Department, Cambridge, U.K.

J. Eng. Gas Turbines Power 107(2), 337-343 (Apr 01, 1985) (7 pages) doi:10.1115/1.3239725 History: Received December 27, 1983; Online October 15, 2009

Abstract

This paper describes a time-marching calculation of the unsteady flow generated by the interaction of upstream wakes with a moving blade row. The inviscid equations of motion are solved using a finite volume technique. Wake dissipation is modeled using an artificial viscosity. Predictions are presented for the rotor mid-span section of an axial turbine. Reasonable agreement is found between the predicted and measured unsteady blade surface static pressures and velocities. These and other results confirm that simple theories can be used to explain the phenomena of rotor-stator wake interactions.

Copyright © 1985 by ASME
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