Multiphase dynamics in arbitrary geometries on fixed Cartesian grids (Q1375498)

A mixed Eulerian-Lagrangian algorithm for interface tracking is applied to compute flows with solid-fluid and fluid-fluid interfaces. The method is capable of handling fluid flows in the presence of both irregularly shaped solid boundaries and moving boundaries on a fixed Cartesian grid. The field equations are solved on the underlying fixed grid using a collocated variable, pressure-based formulation. The moving boundary is tracked explicitly by the Lagrangian translation of marker particles. The performance is demonstrated by the simulation of Newtonian liquid drops.