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Acoustical Society of America, The Journal of the Acoustical Society of America, 6(142), p. 3649-3659

DOI: 10.1121/1.5017619

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Pressure and tension waves from bubble collapse near a solid boundary: A numerical approach

Journal article published in 2017 by Christiane Lechner, Max Koch, Werner Lauterborn, Robert Mettin ORCID
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

The acoustic waves being generated during the motion of a bubble in water near a solid boundary are calculated numerically. The open source package OpenFOAM is used for solving the Navier-Stokes equation and extended to include nonlinear acoustic wave effects via the Tait equation for water. A bubble model with a small amount of gas is chosen, the gas obeying an adiabatic law. A bubble starting from a small size with high internal pressure near a flat, solid boundary is studied. The sequence of events from bubble growth via axial microjet formation, jet impact, annular nanojet formation, torus-bubble collapse, and bubble rebound to second collapse is described. The different pressure and tension waves with their propagation properties are demonstrated.