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Seminarium om kondenserade materiens fysik - Bernhard Mehlig

Forskning
Naturvetenskap & IT

Detta är en digital seminarieserie i kondenserade materiens fysik och atomfysik, med syfte att koppla samman forskare från olika nordiska universitet. Samtalen är informella och ska inspirera till diskussioner och interaktioner.

Seminarium,
Webinar
Datum
17 feb 2023
Tid
13:15 - 14:15
Plats
Digitalt via zoom

Bernhard Mehlig: Statistical models for turbulent aerosols

Abstract

Turbulent aerosols are suspensions of small particles in a turbulent gas. The analysis of such highly non-linear and multi-scale dynamical systems poses formidable challenges. Laboratory experiments resolving the particle dynamics have only recently become possible, and direct numerical simulations of such systems are still immensely difficult. In this talk I describe recent progress in understanding the dynamics of turbulent aerosols using highly idealised  statistical models that  capture the relevant physics, and that allow systematic mathematical analysis using dynamical-systems theory. I summarise how this helps to understand fundamental mechanisms determining the particle dynamics: small-scale fractal clustering, caustic singularities, and anomalously large relative particle velocities. I highlight successes and failures of this approach, as well as the most important open questions. 

Seminariet hålls digitalt via Zoom

Zoom-länk: https://nordita.org/zoom/nvcms

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Seminarium om kondenserade materiens fysik