Summary: Dr. Jan Zapletal, researcher of the center IT4Innovation, a supercomputing center in hiosted in the University of Ostrava, Czech Republic is visiting X.Claeys spending a full month in LJLL/UPMC in March 2018. Dr. Zapletal is an expert in the massive parallelisation of boundary integral solvers and domain decomposition.
Modelling and simulation of wave propagation phenomena is a broad topic connected to many applications,
but also raising a lot of numerical and theoretical challenges. Some of these challenges are targeted by ANR projects
Medimax and NonlocalDD, and the purpose of this workshop is to gather specialists on wave propagation topics
related to these two projects. The aim is to encourage exchanges and discussions, with a particular focus
(but not limited to) the following aspects: domain decomposition, integral methods, inverse problems and medical
imaging, asymptotic modelling, high order methods and numerical and analytical modelling.
On the occasion of his sabbatical leave, Professor Ralf Hiptmair from the Seminar of Applied Mathematics at ETH Zürich will be staying at laboratoire Jacques-Louis Lions in UPMC. We will be located in the office 15-25-317.
Summary: On the occasion of the CEMRACS summer school (that includes L.Grigori as co-organiser), the project ElastoPhi has been supervised by F.Nataf and X.Claeys in collaboration with I.BenGharbia from Institut Français du Pétrole Energies Nouvelles (IFPEN). The ElastoPhi project involved P.Marchand and M.Bonazzoli as students, and P.-H.Tournier participated in the supervision. This project has been concerned with the acceleration of matrix-vector products in the boundary integral equation based solution of an elastostatic problem around crack networks. This project has gave the opportunity to develop a Hmatrix based linear solver.