Bempedelis, N;
Ventikos, Y;
(2020)
Energy focusing in shock-collapsed bubble arrays.
Journal of Fluid Mechanics
, 900
, Article A44. 10.1017/jfm.2020.535.
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Abstract
During its collapse a bubble can draw and concentrate energy from its surroundings. In the present work, we investigate the behaviour of certain multibubble configurations that have the potential for achieving significant levels of energy focusing. The dynamics of these configurations are studied for the first time in three dimensions, and are shown to be significantly different from those in two dimensions. Novel observations regarding focusing regimes in collapsing arrays are presented. Finally, through a series of numerical experiments on previously unexplored arrangements, we demonstrate that substantially enhanced levels of energy concentration can be achieved.
| Type: | Article |
|---|---|
| Title: | Energy focusing in shock-collapsed bubble arrays |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1017/jfm.2020.535 |
| Publisher version: | https://doi.org/10.1017/jfm.2020.535 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | bubble dynamics, gas/liquid flow |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10109229 |
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