Welcome to the no frames version of this page. <BR> <A HREF=home.en.html>To the English home page</A>. <P> <I>Bienvenue sur le site pas encadr&eacute;. <BR> <A HREF=home.fra.html>Par ici pour l'accueil en fran&cced;ais</A>. <P> PhD thesis: numerical modeling of avalanches, numerical modelling of free surface flows, geophysical flows, landslides, numerical simulation, finite elements methods, characteristics method (O. Pironneau), shear-flow instability (Kelvin-Helmholtz), gravity currents, particle-laden flow, variable density fluid, variable density Navier-Stokes equations, geophysical hazard, CFD (Computational Fluid Dynamics), multiphase flows, two phase flows, interface tracking, level set method, VOF method (Volume Of Fluid method), Bingham fluids, yield-stress fluid, snow, lawine, lawinen, snow mantle, snow dynamics.<BR> Thèse de Doctorat: modélisation numérique des avalanches, simulation numérique des écoulements &agrave; surface libre, &eacute;coulements g&eacute;ophysiques, coul&eacute;es de boue, m&eacute;thode des &eacute;l&eacute;ments finis, m&eacute;thode des caract&eacute;ristiques .