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.
2015
9th International Symposium on Cavitation (CAV2015)
cavitation; bubble dynamics; liquid jet
04 Pubblicazione in atti di convegno::04c Atto di convegno in rivista
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].
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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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