On the simulation of multicomponent gas flow in porous media

In this paper, we present some numerical techniques for the modeling of mul ticomponent gas flow in porous media. We feature the mixed finite element m ethod over quadrilaterals as a solver to the non-Darcy flow equation, and a conservative Godunov-type scheme for the mass balance equations. The Godun ov-type method is a higher-order scheme and requires a linear reconstructio n of the solution profile using appropriately-chosen limiters for the slope . The mixed formulation for the flow system enables an efficient and natural treatment of various well-conditions. (C) 1999 Elsevier Science B.V. and IM ACS. All rights reserved.