Solid polycrystalline materials undergoing diffusion creep are usually described by Cauchy continuum models with a Newtonian viscous rheology dependent on the grain size. Such lacks rotational degrees of freedom needed to describe rotation. Here we provide more general description that includes rotation, and identifies deformation material micropolar (Cosserat) fluid. We derive expressions for ...

In this article, a numerical solution to the growth-diffusion problem is investigated by obtaining results of computational experiments for non-homogeneous and finding its approximate using modified finite difference method. study carried out The scheme used second-order central in space with first-order time.