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Effects of wall compliance on the laminar–turbulent transition of torsional Couette flow

Published online by Cambridge University Press:  28 April 2003

A. CROS ,
R. ALI ,
P. LE GAL ,
P. J. THOMAS ,
L. SCHOUVEILER ,
P. W. CARPENTER  and
M. P. CHAUVE
A. CROS
Affiliation:
Institut de Recherche sur les Phénomènes Hors Equilibre, UMR 6594, CNRS & Universités d'Aix-Marseille I et II, 49 rue F. Joliot Curie, BP 146, Technopôle de Château-Gombert, 13384 Marseille Cédex 13, France
R. ALI
Affiliation:
Fluid Dynamics Research Centre, School of Engineering, University of Warwick, Coventry CV4 7AL, UK
P. LE GAL
Affiliation:
Institut de Recherche sur les Phénomènes Hors Equilibre, UMR 6594, CNRS & Universités d'Aix-Marseille I et II, 49 rue F. Joliot Curie, BP 146, Technopôle de Château-Gombert, 13384 Marseille Cédex 13, France
P. J. THOMAS
Affiliation:
Fluid Dynamics Research Centre, School of Engineering, University of Warwick, Coventry CV4 7AL, UK
L. SCHOUVEILER
Affiliation:
Institut de Recherche sur les Phénomènes Hors Equilibre, UMR 6594, CNRS & Universités d'Aix-Marseille I et II, 49 rue F. Joliot Curie, BP 146, Technopôle de Château-Gombert, 13384 Marseille Cédex 13, France
P. W. CARPENTER
Affiliation:
Fluid Dynamics Research Centre, School of Engineering, University of Warwick, Coventry CV4 7AL, UK
M. P. CHAUVE
Affiliation:
Institut de Recherche sur les Phénomènes Hors Equilibre, UMR 6594, CNRS & Universités d'Aix-Marseille I et II, 49 rue F. Joliot Curie, BP 146, Technopôle de Château-Gombert, 13384 Marseille Cédex 13, France
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Abstract

Torsional Couette flow between a rotating disk and a stationary wall is studied experimentally. The surface of the disk is either rigid or covered with a compliant coating. The influence of wall compliance on characteristic flow instabilities and on the laminar–turbulent flow transition is investigated. Data obtained from analysing flow visualizations are discussed. It is found that wall compliance favours two of the three characteristic wave patterns associated with the transition process and broadens the parameter regime in which these patterns are observed. The results for the effects of wall compliance on the third pattern are inconclusive. However, the experiments indicate that the third pattern is not a primary constituent of the laminar–turbulent transition process of torsional Couette flow.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 481 , 25 April 2003 , pp. 177 - 186
Copyright
© 2003 Cambridge University Press

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