Journal of Fluid Mechanics

Nonlinear flow phenomena in a symmetric sudden expansion

R. M.  Fearn a1, T.  Mullin a1 and K. A.  Cliffe a2
a1 Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK
a2 Theoretical Physics Division, Harwell Laboratory, Didcot, Oxfordshire OX11 ORA, UK

Article author query
fearn rm   [Google Scholar] 
mullin t   [Google Scholar] 
cliffe ka   [Google Scholar] 


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.

(Published Online April 26 2006)
(Received March 29 1989)
(Revised July 29 1989)

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