The Development of a Turbulent Junction Vortex System (Data Bank Contribution)

[+] Author and Article Information
F. J. Pierce

Mechanical Engineering Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0238

J. Shin

NASA-Lewis Research Center, Cleveland, OH 44135

J. Fluids Eng 114(4), 559-565 (Dec 01, 1992) (7 pages) doi:10.1115/1.2910068 History: Received June 05, 1990; Online May 23, 2008


The growth and development of a horseshoe vortex system in an incompressible, three-dimensional turbulent junction flow were investigated experimentally. A streamlined cylinder mounted with its axis normal to a flat surface was used to generate the junction vortex flow. The flow environment was characterized by a body Reynolds number of 183,000, based on the leading edge diameter of the streamlined cylinder. The study included surface flow visualizations, surface pressure measurements, and mean flow measurements of total pressure, static pressure, and velocity distributions in three planes around the base of the streamlined cylinder, and in two planes in the wake flow. Some characterizations of vortex properties based on the measured mean cross-flow velocity components are presented. The results show the presence of a single large, dominant vortex, with strong evidence of a very small corner vortex in the junction between the cylinder and the flat surface. The center of the dominant vortex drifts away from both the body and the flat surface as the flow develops along and downstream of the body. The growth and development of the core of the large, dominant vortex are documented.

Copyright © 1992 by The American Society of Mechanical Engineers
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