A finite volume scheme for nonlinear degenerate parabolic equations

Details A finite volume scheme for nonlinear degenerate parabolic equations A finite volume scheme for nonlinear degenerate parabolic equations

2011-11-04

arxiv.org/abs/1111.1092v1

Mathematics

Numerical Analysis

Scientific paper

We propose a second order finite volume scheme for nonlinear degenerate parabolic equations. For some of these models (porous media equation, drift-diffusion system for semiconductors, ...) it has been proved that the transient solution converges to a steady-state when time goes to infinity. The present scheme preserves steady-states and provides a satisfying long-time behavior. Moreover, it remains valid and second-order accurate in space even in the degenerate case. After describing the numerical scheme, we present several numerical results which confirm the high-order accuracy in various regime degenerate and non degenerate cases and underline the efficiency to preserve the large-time asymptotic.

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