Multi-Material Interface Reconstruction using Particles and Power Diagrams

Rao Garimella rao@cut.this.part.lanl.gov

Samuel Schofield sams@cut.this.part.lanl.gov

M.M. Francois mmfran@cut.this.part.lanl.gov

R. Loubere loubere@cut.this.part.mip.ups-tlse.fr

We present a new method for interface reconstruction in multi-material flow simulations. The method introduces particles into mixed cells and uses an an attraction-repulsion model to draw particles of the same material type together. The interface is then reconstructed from the particles using a weighted Voronoi diagram or Power Diagram. The new method eliminates the material order dependence of the interface topology commonly seen in VOF reconstruction of three or more materials in a cell.