In the present paper a diffuse interface approach is used to address the collapse of a sub-micron vapor bubble near solid boundaries. This formulation enables an unprecedented description of interfacial flows that naturally takes into account topology modification and phase changes (both vapor/liquid and vapor/supercritical fluid transformations). Results from numerical simulations are exploited to discuss the complex sequence of events associated with the bubble collapse near a wall, encompassing shock-wave emissions in the liquid and reflections from the wall, their successive interaction with the expanding bubble, the ensuing asymmetry of the bubble and the eventual jetting phase.

Dynamics of a vapor nanobubble collapsing near a solid boundary / Magaletti, Francesco; Gallo, Mirko; Marino, Luca; Casciola, Carlo Massimo. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - 656:1(2015). ((Intervento presentato al convegno 9th International Symposium on Cavitation (CAV2015) tenutosi a Lausanne, Switzerland nel December 6-10 2015 [10.1088/1742-6596/656/1/012012].

Dynamics of a vapor nanobubble collapsing near a solid boundary

MAGALETTI, FRANCESCO;GALLO, MIRKO;MARINO, Luca;CASCIOLA, Carlo Massimo
2015

Abstract

In the present paper a diffuse interface approach is used to address the collapse of a sub-micron vapor bubble near solid boundaries. This formulation enables an unprecedented description of interfacial flows that naturally takes into account topology modification and phase changes (both vapor/liquid and vapor/supercritical fluid transformations). Results from numerical simulations are exploited to discuss the complex sequence of events associated with the bubble collapse near a wall, encompassing shock-wave emissions in the liquid and reflections from the wall, their successive interaction with the expanding bubble, the ensuing asymmetry of the bubble and the eventual jetting phase.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/849060
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