On the Creation of Stagnation Points in a Rotating Flow

[+] Author and Article Information
T. Mullin

Department of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom

S. J. Tavener

Department of Mathematics, Pennsylvania State University, State College, PA

K. A. Cliffe

AEA Technology, Harwell, United Kingdom

J. Fluids Eng 120(4), 685-689 (Dec 01, 1998) (5 pages) doi:10.1115/1.2820724 History: Received November 05, 1997; Revised July 09, 1998; Online December 04, 2007


We report the results of a numerical study of the creation of stagnation points in a rotating cylinder of fluid where both endwalls are rotated. Good agreement is found with previous results where the stagnation points are formed on the core of the primary columnar vortex. Novel phenomena have been uncovered at small aspect ratios where stagnation occurs off-axis directly and the secondary vortex which is created forms a toroid. The case is then considered of a small cylinder placed along the center of the flow and despite the qualitatively different boundary condition, the phenomena are found to be robust.

Copyright © 1998 by The American Society of Mechanical Engineers
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