Contributions individuelles
An immersed boundary method for fluid flows around rigid objects
Jendoubi, Aymen, Driss Yakoubi, André Fortin and Cristian Tibirna
GIREF, Département de mathématiques et de statistique, Université Laval

We present an immersed boundary (IB) method  for solving fluid flow problems in  presence of static and moving rigid objects. A finite element method is used starting from a base mesh which does not represent exactly rigid objects (non body-conforming mesh).  At each time step, the base mesh is locally modified  to provide a new mesh fitting the boundary of the rigid objects. The mesh is also locally improved using edge swapping to enhance the quality of the elements. The Navier-Stokes equations are then solved on this new mesh. The velocity of moving objects is imposed through standard Dirichlet boundary conditions.  We consider a number of test problems and compare the numerical solutions with those obtained on classical body-fitted meshes whenever possible.

Jeudi, 20 juin, 12h00
Salle Des Plaines C