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Dynamics of transient cavities

Published online by Cambridge University Press:  30 October 2007

V. DUCLAUX ,
F. CAILLÉ ,
C. DUEZ ,
C. YBERT ,
L. BOCQUET  and
C. CLANET
V. DUCLAUX
Affiliation:
IRPHE, UMR 6594, 49 rue F. Joliot-Curie, BP 146, 13384 Marseille, France
F. CAILLÉ
Affiliation:
IRPHE, UMR 6594, 49 rue F. Joliot-Curie, BP 146, 13384 Marseille, France
C. DUEZ
Affiliation:
Laboratoire PMCN, UMR CNRS 5586, Université Lyon I, 69622 Villeurbanne, France
C. YBERT
Affiliation:
Laboratoire PMCN, UMR CNRS 5586, Université Lyon I, 69622 Villeurbanne, France
L. BOCQUET
Affiliation:
Laboratoire PMCN, UMR CNRS 5586, Université Lyon I, 69622 Villeurbanne, France
C. CLANET
Affiliation:
IRPHE, UMR 6594, 49 rue F. Joliot-Curie, BP 146, 13384 Marseille, France
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Abstract

We study the collapse of a transient cavity of air in water created by the impact of a solid body. Experimentally, we characterize the dynamics of the cavity from its creation (t = 0) until it collapses (t = τ) in the limit where inertia dominates viscous and capillary effects. Theoretically, we find in this regime an approximate analytical solution which describes the time evolution of the shape of the cavity. This theoretical solution predicts the existence of two different types of cavities that we also observe experimentally.

Type
Papers
Information
Journal of Fluid Mechanics , Volume 591 , 25 November 2007 , pp. 1 - 19
Copyright
Copyright © Cambridge University Press 2007

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