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Characteristics of the vortex wave

Published online by Cambridge University Press:  26 April 2006

Bruce M. Deblois ,
Ian J. Sobey  and
Saad Alani
Bruce M. Deblois
Affiliation:
Computing Laboratory, Oxford University, Oxford OX1 3QD, UK Current address: USAF Academy, CO 80840, USA.
Ian J. Sobey
Affiliation:
Computing Laboratory, Oxford University, Oxford OX1 3QD, UK
Saad Alani
Affiliation:
Department of Engineering Science, Oxford University, Oxford OX1 3PJ, UK Current address: Biwater Treatment Ltd, Gregge St, Heywood OL10 2DX, UK.
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Abstract

The generation of a standing wave of vortices in thin channels has been experimentally observed and discussed in the literature for the last several years. The specific cause of the wave and its response to various conditions remains largely unexplored. In this paper we model pulsatile flow through thin channels with inserted deflectors to generate the vortex wave, and we examine various measures to quantify its effects. We focus on the numerical solution of the transient vortex wave phenomenon and its response to a superimposed bulk flow, variations of pulsation, deflector spacing and shape as well as transverse suction. The quantifying measures are mapped over a Reynolds’ number–Strouhal number domain.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 253 , August 1993 , pp. 27 - 43
Copyright
© 1993 Cambridge University Press

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