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RESEARCH PAPERS

A Visual Study of Turbine Blade Pressure-Side Boundary Layers

[+] Author and Article Information
L. S. Han

USAF, AEDC, Arnold Airforce Station; Mechanical Engineering Department, The Ohio State University, Columbus, Ohio 43210

W. R. Cox

Mechanical Engineering Department, The Ohio State University, Columbus, Ohio 43210

J. Eng. Power 105(1), 47-52 (Jan 01, 1983) (6 pages) doi:10.1115/1.3227397 History: Received December 02, 1981; Online September 28, 2009

Abstract

Boundary layer characteristics on the pressure-side of a turbine airfoil were investigated experimentally in a three-blade cascade tunnel. The blades had a chord length of 21 in. to facilitate flow visualization and high-speed photography. The investigation revealed the existence of the Gortler’s vortices appearing in spurts in regions of severe curvature. In the trailing edge region, Karman vortices were detected and found to interact strongly with the Gortler’s vortices convected thereto.

Copyright © 1983 by ASME
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