Travelling Waves for Adaptive Grid Discretizations of Reaction Diffusion Systems II: Linear Theory
Travelling Waves for Adaptive Grid Discretizations of Reaction Diffusion Systems II: Linear Theory
复制标题
反应扩散系统自适应网格离散化的行波 II:线性理论
DOI:
10.1007/s10884-021-09942-y
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发表时间:
2022
影响因子:
1.3
通讯作者:
Van Vleck, E. S.
中科院分区:
文献类型:
--
作者:
Hupkes, H. J.;Van Vleck, E. S.
In this paper we consider an adaptive spatial discretization scheme for the Nagumo PDE. The scheme is a commonly used spatial mesh adaptation method based on equidistributing the arclength of the solution under consideration. We assume that this equidistribution is strictly enforced, which leads to the non-local problem with infinite range interactions that we derived in Hupkes and Van Vleck (J Dyn Differ Equ 28:955, 2016). For small spatial grid-sizes, we establish some useful Fredholm properties for the operator that arises after linearizing our system around the travelling wave solutions to the original Nagumo PDE. In particular, we perform a singular perturbation argument to lift these properties from the natural limiting operator. This limiting operator is a spatially stretched and twisted version of the standard second order differential operator that is associated to the PDE waves.
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
A. Johann
通讯作者:
A. Johann