Numerical simulation of multiply connected axisymmetric discontinuous incompressible potential flows

A. M. Bubenchikov   ; V. A. Korobitsyn   ; D. V. Korobitsyn   ; P. P. Kotov   ; Yu. I. Shokin

Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 54 (2014) no. 7, pp. 1194-1202

Résumé

The ascend and evolution of an axisymmetric gas bubble are studied numerically using an inviscid incompressible potential flow model. The volume of the gas bubble varies adiabatically. The transition from a simply connected bubble to a doubly connected toroidal one and its interaction with the free surface are simulated. The change in connectedness is accompanied by a nonzero velocity circulation and a discontinuous velocity potential occurring over an arbitrary toroidal liquid surface enclosing the bubble.

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