Section: New Results

A changing-topology ALE numerical scheme

Participants : F. Alauzet [correspondant] and G. Olivier

The main difficulty arising in numerical simulations with moving geometries is to handle the displacement of the domain boundaries, i.e., the moving bodies. Only vertices displacement is not sufficient to achieve complex movement such as shear. We proved that the use of edge swapping allows us to achieve such complex displacement. We therefore developed an ALE formulation of this topological mesh modification to preserve the solver accuracy and convergence order [31] .