A Three-Dimensional Turbulent Detached Flow With a Horseshoe Vortex

[+] Author and Article Information
J. Ishii

Gas Turbine Design Section, Toshiba Corporation, Tsurumi, Yokohama, 230, Japan

S. Honami

Mechanical Engineering Department, Science University of Tokyo, Shinjuku, Tokyo, 162 Japan

J. Eng. Gas Turbines Power 108(1), 125-130 (Jan 01, 1986) (6 pages) doi:10.1115/1.3239858 History: Received December 21, 1984; Online October 15, 2009


Static and dynamic mechanisms in a three-dimensional, turbulent, detached flow with a horseshoe vortex, which is encountered in turbomachinery, are clarified experimentally. Flow directional intermittency is obtained by a thermal tuft probe and wall pressure fluctuation survey is performed. Flow visualization is also made by the oil film and smoke wire technique. Four types of vortices exist in the detached region. These vortices are generated by the different process. The detached region is divided into two parts: the region I and II. The flow in the region II, including the detachment point, has dynamic characteristics with low-frequency fluctuation. A new flow model in the detached region is proposed.

Copyright © 1986 by ASME
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