[Soft-matter] Soft Matter & Complex Systems Seminar on 5 Dec 2025

[Maciej Lisicki]

Dear Soft Matter & Complex Systems Colleagues and Friends,

On Friday 5 December 2025 at 9:30 AM at the UW Faculty of Physics (Pasteura 5, Warsaw; room 1.40) we are hosting a seminar, during which 

Antoine Sellier (LadHyX, Ecole Polytechnique, Palaiseau, France))

will give a talk
Stokes flow about a collection of slip solid bodies

Abstract

A boundary efficient and accurate method is proposed and numerically worked out to calculate, in the creeping flow regime, the resistance matrix of a cluster made of N arbitrarily-shaped slip solid bodies. The slip on each body curved surface is modeled using the widely-employed Navier slip condition and there is no restriction on the number N of bodies. Moreover, the task reduces to the treatment of 6N boundary-integral equations on the cluster surface and it is no use calculating the Stokes flow about the moving particles. Comparisons with the literature for one sphere (singularity method) and for two-interacting spheres (multipole method) will be presented. Finally, some numerical results for slip ellipsoids and the gravity-driven motion of two slip interacting spheres will be given and discussed.

We warmly welcome everyone to attend the talk and the Soft Matter Coffee Break after the seminar, held in room 2.63 (2nd floor).

Maria Ekiel-Jeżewska
Maciej Lisicki
Piotr Szymczak
Panagiotis Theodorakis
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