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Axisymmetric vortex breakdown Part 1. Confined swirling flow

Published online by Cambridge University Press:  26 April 2006

J. M. Lopez
J. M. Lopez
Affiliation:
Aeronautical Research Laboratory, P.O. Box 4331, Melbourne, Vic., 3001. Australia
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Abstract

A comparison between the experimental visualization and numerical simulations of the occurrence of vortex breakdown in laminar swirling flows produced by a rotating endwall is presented. The experimental visualizations of Escudier (1984) were the first to detect the presence of multiple recirculation zones and the numerical model presented here, consisting of a numerical solution of the unsteady axisymmetric Navier-Stokes equations, faithfully reproduces these phenomena and all other observed characteristics of the flow. Further, the numerical calculations elucidate the onset of oscillatory flow, an aspect of the flow that was not clearly resolved by the flow visualization experiments. Part 2 of the paper examines the underlying physics of these vortex flows.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 221 , December 1990 , pp. 533 - 552
Copyright
© 1990 Cambridge University Press

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