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Updated: May 27, 2026

Induction of Microstreaming by Nonspherical Bubble Oscillations in an Acoustic Levitation System
Published on: May 9, 2021
Effects of phase transition and thermodynamics on the dynamics of cavitation bubbles collapsing near a solid boundary
Udo Lantermann1, Gohar Moloudi1, Mazyar Dawoodian1
1Institute of Sustainable and Autonomous Maritime Systems, University of Duisburg-Essen, Duisburg, Germany.
Abstract:
This paper documents investigated phase transition as well as thermal and water salinity effects on the dynamics of three-dimensional cavitation bubbles collapsing near solid boundaries by employing mathematical models that account for phase transition, compressibility, thermodynamic, and three-dimensional effects. We performed systematic three-dimensional simulations of the two-phase flow by solving the coupled conservation equations of mass, momentum, and energy as well as a transport equation for the volume fraction using a mass transfer model. We conducted extensive verification and validation studies. Results showed that phase transition affected the bubble dynamics substantially, albeit mainly after the bubble's first collapse. After the initial bubble collapse, the vapor phase heated up to about 460 K. The simulations captured asymmetric jets and toroidal collapse structures, while the experiments on salinity revealed that increased salt concentration weakened bubble rebound and left persistent vapor remnants. The induced pressures, temperatures, and velocities from bubble collapse are presented and discussed.
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