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.
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