期刊
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
卷 142, 期 6, 页码 3649-3659出版社
ACOUSTICAL SOC AMER AMER INST PHYSICS
DOI: 10.1121/1.5017619
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资金
- Public Employment Service Austria (AMS)
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. (C) 2017 Acoustical Society of America.
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