Asymmetrical Boundary Layer Separation at the Base of a Two Cylinder Geometry

[+] Author and Article Information
M. T. Boyle

University of Maine, Orono, ME 04469-0110

L. S. Langston

University of Connecticut, Storrs, CT

J. Fluids Eng 111(4), 443-448 (Dec 01, 1989) (6 pages) doi:10.1115/1.3243666 History: Received December 14, 1987; Online October 26, 2009


This paper reports on the experimental description of the three-dimensional horseshoe vortex system occurring at the base of two cylinders mounted side by side on an endwall. The spacing between the two cylinders is adjusted to generate a family of viscous flows. Flow visualization performed in a water tunnel provides a qualitative understanding of the flow over a range of flow variables. A detailed wind tunnel experiment, provides a quantitative description of the flow at a single test condition. The flow is described by the use of a five-hole pressure probe and by cylinder and endwall surface static pressure measurements. At ReD = 2.5 × 105 the measurements show an asymmetrical primary vortex with a wide flat cross section. A small counter rotating vortex is found between the primary vortex and the cylinder leading edge.

Copyright © 1989 by ASME
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