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RESEARCH PAPERS

Transonic Flow Analysis in Axial-Flow Turbomachinery Cascades by a Time-Dependent Method of Characteristics

[+] Author and Article Information
R. A. Delaney, P. Kavanagh

Department of Mechanical Engineering and Engineering Research Institute, Iowa State University, Ames, Ia.

J. Eng. Power 98(3), 356-363 (Jul 01, 1976) (8 pages) doi:10.1115/1.3446181 History: Received November 22, 1974; Online July 14, 2010

Abstract

Solutions for transonic flow in cascades are determined by a second-order time-dependent method of characteristics using bicharacteristics. The analysis method is based on unsteady, two-dimensional, compressible, inviscid flow with steady-state solutions computed as the asymptotic limit in time of transient solutions. Two turbine cascade cases are presented. The first involves subsonic flow throughout the cascade; the second involves subsonic inlet and discharge flows with transonic flow over a portion of the cascade passage. In both cases, the computed results for blade surface pressure distribution are compared with experimental data. Generally good agreement is shown.

Copyright © 1976 by ASME
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