Vortex point models as limits of small bodies in a fluid

Speaker: Professor Glass Olivier，Universit\'e Paris-Dauphine and CNRS 、

Inviter: 张平

Title: Vortex point models as limits of small bodies in a fluid

Language: English

Time & Venue: 2026.10.21   16:30-17:30    南楼N818

Abstract: We consider a simple model of evolution of solids inside a fluid in 2D. The fluid is driven by the classical incompressible Euler equation, while the solids move rigidly and evolve according to Newton's law, influenced by the pressure of the fluid on their boundary. We suppose that the fluid's initial datum is given and consider the corresponding solution when the solids shrink to points. The question is: what can be said about the limit? We will show that we recover different point vortex models in the limit.This corresponds to several works with Franck Sueur (University of Luxembourg),  Christophe Lacave (Université Savoie Mont Blanc, France) and Alexandre Munnier (Université de Lorraine, France)