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Travelling wave solutions of a reaction—infiltration problem and a related free boundary problem
Published online by Cambridge University Press: 26 September 2008
Abstract
We consider travelling wave solutions of a reaction–diffusion system arising in a model for infiltration with changing porosity due to reaction. We show that the travelling wave solution exists, and is unique modulo translations. A small parameter ε appears in this problem. The formal limit as ε → 0 is a free boundary problem. We show that the solution for ε > 0 tends, in a suitable norm, to the solution of the formal limit.
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