A front remeshing technique for a Lagrangian description of moving interfaces in two-fluid flows
Résumé
The numerical analysis of two-fluid flows involves the treatment of a discontinuity that appears at
the separating interface. Classical Lagrangian schemes applied to update the front position between
two immiscible incompressible fluids have been long recognized to provide a sharp representation of
the interface. However, the main drawback of these approaches is the progressive distortion in the
distribution of the markers used to identify the material front. To avoid this problem, an interface
remeshing algorithm based on the diffuse approximation of the interface curvature is proposed in this
work. In addition, the remeshed front is enforced to preserve the global volume. These new aspects are
incorporated in an existing fluid dynamics formulation for the analysis of two-fluid flows problems. The
resulting formulation is called in this work as the moving Lagrangian interface remeshing technique
(MLIRT).