AIMR Math Group Seminar #6



Date : May 25th (Fri.) 10:00~12:00

Place:3C, AIMR Main Bldg., Katahira campus, Tohoku University

SpeakerProf. Olivier Pironneau

Title: Handling Contacts in an Eulerian Frame: A Finite Element Approach for Fluid-Structures with Contacts



Eulerian variational formulations for deformable solids, with or without fluids around them, end-up, after implicit time discretisation, as large non-linear systems for the velocities in the moving domains. Handling moving domains and moving boundaries requires careful meshing procedures; on the other hand the detection of contact is particularly simple with a distance function. Then at every time step a variational inequality can be used to update the velocities. This talk will give new implementation details and two new complex simulations: a very soft bouncing ball in an axisymmetric flow and a disk hit by a club.





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