@Article{CiCP-8-1139, author = {C. Besse and T. Goudon}, title = {Derivation of a Non-Local Model for Diffusion Asymptotics — Application to Radiative Transfer Problems}, journal = {Communications in Computational Physics}, year = {2010}, volume = {8}, number = {5}, pages = {1139--1182}, abstract = {
In this paper, we introduce a moment closure which is intended to provide a macroscopic approximation of the evolution of a particle distribution function, solution of a kinetic equation. This closure is of non-local type in the sense that it involves convolution or pseudo-differential operators. We show it is consistent with the diffusion limit and we propose numerical approximations to treat the non-local terms. We illustrate how this approach can be incorporated in complex models involving a coupling with hydrodynamic equations, by treating examples arising in radiative transfer. We pay a specific attention to the conservation of the total energy by the numerical scheme.
}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.211009.100310a}, url = {http://global-sci.org/intro/article_detail/cicp/7611.html} }