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Valentin Leroy (CNRS (Centre national de la recherche scientifique))
Tuesday 23 May 2023, 09:00-09:45
Bubbly media as a playground for multiple scattering
- 👤 Speaker: Valentin Leroy (CNRS (Centre national de la recherche scientifique))
- 📅 Date & Time: Tuesday 23 May 2023, 09:00 - 09:45
- 📍 Venue: Seminar Room 1, Newton Institute
Abstract
Bubbles are ideal candidates for studying multiple scattering: they are strong and simple acoustic scatterers. Strong because they exhibit a low frequency resonance (Minnaert resonance), and simple because they are monopoles. It means that one can model the propagation of acoustic waves in a bubbly medium with simple mathematical tools. This talk will address some typical questions that arise in multiple scattering problems: how to include the effects of position correlations, scattering loops and polydispersity in the dispersion relation? We will first consider 3D bubbly media. In a second step, we will show that a 2D geometry is even simpler to model and leads to interesting applications such as the super-absorption of acoustic energy.
Series This talk is part of the Isaac Newton Institute Seminar Series series.
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