Fick's las selects the Neumann boundary condition

Abstract
We study the appearance of a boundary condition along an interface between two regions, one with constant diffusivity 1 and the other with diffusivity , when . In particular, we take Fick's diffusion law in a context of reaction-diffusion equation with bistable nonlinearity and show that the limit of the reaction-diffusion equation satisfies the homogeneous Neumann boundary condition along the interface. This problem is developed as an application of heterogeneous diffusion laws to study the geometry effect of domain.

Publisher
arXiv

arXiv
2308.00321

Additional Links
https://arxiv.org/pdf/2308.00321.pdf

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