Numerical modelling of convection-diffusion-reaction problems with free boundary in 1D

Details Numerical modelling of convection-diffusion-reaction problems with free boundary in 1D Numerical modelling of convection-diffusion-reaction problems with free boundary in 1D

2009-09-02

arxiv.org/abs/0909.0363v1

Mathematics

Numerical Analysis

Scientific paper

We discuss a numerical method for convection-diffusion-reaction problems with a free boundary in 1D. The method is based on the numerical modelling of the interface evolution, the transformation to a fixed domain problem and the approximation by an ODE system. The interface evolution is modelled by means of the local shape of the corresponding travelling wave solution. The method can be applied to many free boundary problems with a finite speed of the interface. The presented method can also approximate some problems with an infinite speed of the interface for damped travelling wave type solutions. In the numerical experiments we compare our numerical solution with the analytical ones for some problems.

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