Self-similar solutions for reversing interfaces in the nonlinear diffusion equation with constant absorption
Mathematical Physics
2015-06-17 v1 math.MP
Abstract
We consider the slow nonlinear diffusion equation subject to a constant absorption rate and construct local self-similar solutions for reversing (and anti-reversing) interfaces, where an initially advancing (receding) interface gives way to a receding (advancing) one. We use an approach based on invariant manifolds, which allows us to determine the required asymptotic behaviour for small and large values of the concentration. We then `connect' the requisite asymptotic behaviours using a robust and accurate numerical scheme. By doing so, we are able to furnish a rich set of self-similar solutions for both reversing and anti-reversing interfaces.
Cite
@article{arxiv.1506.05058,
title = {Self-similar solutions for reversing interfaces in the nonlinear diffusion equation with constant absorption},
author = {Jamie M. Foster and Dmitry E. Pelinovsky},
journal= {arXiv preprint arXiv:1506.05058},
year = {2015}
}