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Nonlinear flow phenomena in a symmetric sudden expansion

Published online by Cambridge University Press:  26 April 2006

R. M. Fearn ,
T. Mullin  and
K. A. Cliffe
R. M. Fearn
Affiliation:
Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK
T. Mullin
Affiliation:
Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK
K. A. Cliffe
Affiliation:
Theoretical Physics Division, Harwell Laboratory, Didcot, Oxfordshire OX11 ORA, UK
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Abstract

The origin of steady asymmetric flows in a symmetric sudden expansion is studied using experimental and numerical techniques. We show that the asymmetry arises at a symmetry-breaking bifurcation and good agreement between the experiments and numerical calculations is obtained. At higher Reynolds numbers the flow becomes time-dependent and there is experimental evidence that this is associated with three-dimensional effects.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 211 , February 1990 , pp. 595 - 608
Copyright
© 1990 Cambridge University Press

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