Validation of Three-Dimensional Euler Methods for Vibrating Cascade Aerodynamics

[+] Author and Article Information
G. A. Gerolymos, I. Vallet

LEMFI, URA CNRS, Université Pierre and Marie Curie, Orsay, Paris, France

J. Turbomach 118(4), 771-782 (Oct 01, 1996) (12 pages) doi:10.1115/1.2840933 History: Received February 25, 1994; Online January 29, 2008


The purpose of this work is to validate a time-nonlinear three-dimensional Euler solver for vibrating cascades aerodynamics by comparison with available theoretical semi-analytical results from flat-plate cascades. First the method is validated with respect to the purely two-dimensional theory of Verdon (for supersonic flow) by computing two-dimensional vibration (spanwise constant) in linear three-dimensional cascades. Then the method is validated by comparison with the theoretical results of Namba and the computational results of He and Denton, for subsonic flow in a linear three-dimensional cascade with three-dimensional vibratory mode. Finally the method is compared with results of Chi from two subsonic rotating annular cascades of helicoïdal flat plates. Quite satisfactory agreement is obtained for all the cases studied. A first code-to-code comparison is also presented.

Copyright © 1996 by The American Society of Mechanical Engineers
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