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RESEARCH PAPERS

Assessment of Three-Dimensional Inviscid Effects in Turbomachinery Using Simple Models

[+] Author and Article Information
A. Tamura, B. Lakshminarayana

Applied Research Laboratory, The Pennsylvania State University, University Park, Pa.

J. Fluids Eng 98(2), 163-172 (Jun 01, 1976) (10 pages) doi:10.1115/1.3448247 History: Received August 15, 1975; Online October 12, 2010

Abstract

The general objective of the investigation reported in this paper is to obtain a reliable understanding of the three-dimensional inviscid effects in axial flow turbomachinery. The calculation is based on the method of distributed singularities. The baldes are represented by a series of line vortices and line sources which have their axes along the radial direction and are arranged along the blade mean camber surface. The basic perturbed velocity fields due to radial vortex lines of constant strength and radial source lines of variable strength are computed from a modified theory based on Tyson’s and Rossow’s formulation. Examples illustrating the three-dimensional effects due to hub/tip ratio, stagger angle, and number of blades are carried out. The effects of the radial variation of the strength of the radial source line are examined. The three-dimensional effects are found to be appreciable for a low hub/tip configuration with small number of blades.

Copyright © 1976 by ASME
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