Bubble collapse in complex geometries

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• Ivo Peters, University of Southampton
• Wednesday 26 April 2023, 13:00-14:00
• Watson 310.

If you have a question about this talk, please contact Dr Callan Corbett.

In this seminar I will give an overview of recent work on the collapse of vapour bubbles near solid boundaries of various geometries. The vapour bubbles I will discuss are made by laser induced cavitation, which creates mm-sized bubbles that go through a cycle of expansion and collapse in about 300 microseconds. If such a bubble is created in an infinite bath of liquid, the bubble remains largely spherical during the expansion and collapse. If the bubble is created near a solid wall, however, the bubble loses its spherical shape and generates a fast jet pointed towards the wall. Because of the damaging effects of these collapses, known as cavitation erosion, this phenomenon has been of interest for more than 100 years. Although the collapse near a single solid wall is well understood, little is known about the behaviour in more complex geometries. I will start with a very basic question: what happens if a bubble collapses in a corner, made of two walls? I will show how analytic predictions can be made for the direction of the collapse in specific corners and how this analysis can be extended to several more complex geometries.

This talk is part of the Applied Mathematics Seminar Series series.

This talk is included in these lists:

• Applied Mathematics Seminar Series
• School of Mathematics events
• Watson 310

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