Author(s)

R. Huber & R Helmig

Abstract

Ground contaminations by non-aqueous phase liquids have become in recent years a problem of increasing concern. To get a better understanding of the processes and to develop in-situ remediation techniques numerical simulations of such multiphase and compositional flow problems are necessary. We will show a family of multiphase- multicomponent simulators which are based on a new consistent finite volume (box) scheme formulation with an efficient multigrid algorithm. The concept of global mass fractions is incorporated into the system of equations. For the simulation of multiphase flow there are several options for the choice of primary variables. This is because a Newton-Raphson iterative scheme is used to solve the system of equations which is combined with a numerical differentiation of the partial derivatives with r

Keywords