AI Article Synopsis
- The study uses numerical calculations to analyze the acoustic waves produced by a bubble moving in water close to a solid surface.
- The open-source software OpenFOAM is employed to solve fluid dynamics equations and incorporate nonlinear acoustic effects using the Tait equation for water.
- The research details the process of bubble dynamics, including growth, jet formation, collapse, and the resulting pressure waves.
Article 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.
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| http://dx.doi.org/10.1121/1.5017619 | DOI Listing |
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