No abstract

Paris (PArallel, Robust, Interface Simulator) is a finite volume code for simulations of immiscible multi fluid or multiphase flows. It is based on the "one-fluid" formulation of the Navier-Stokes equations where different fluids are treated as one material with variable properties, and surface tension is added as a singular interface force. The fluid equations are solved on a regular structured staggered grid using a second-order explicit projection method. The interface separating the different fluids is tracked either using a Front-Tracking (FT) method where the interface is represented by connected marker points, or by a volume of fluid (VOF) method where the marker function is advected directly on the fixed grid. Paris is written in Fortran95/2002 and parallelized using MPI and domain decomposition. It is based on several earlier FT or VOF codes such as FTC3D, Surfer or Gerris. These codes and similar ones, as well as PARIS, have been used to simulate a wide range of multifluid and multiphase flows.