Esquemas centrais para leis de conservação em meios porosos

Abstract

The development of mathematical models and computational methods for the simulation of flow in porous media has a great interest because of its applications in engineering and other sciences. In general, in order to solve numerically the flow model in porous media the system of partial differential equations are decoupled. This study focus on the numerical schemes for the hyperbolic conservation laws, which solution is non-trivial. The finite volume schemes based on high order algorithm REA (Reconstruct, Evolve, Average) have been used with considerable success for the numerical solution of the conservation laws. Recently, high-order central schemes, based on the methods of Lax-Friedrichs and Rusanov (Local Lax-Friedrichs) have been presented, they reduce the excessive numerical diffusion presented in the first order schemes. In this dissertation we present the study and application of the high-order finite volume central schemes for hyperbolic equations as appear in the porous media flow modeling.