@Article{CiCP-29-747, author = {Xu , JinjingZhao , FeiSheng , Zhiqiang and Yuan , Guangwei}, title = {A Nonlinear Finite Volume Scheme Preserving Maximum Principle for Diffusion Equations}, journal = {Communications in Computational Physics}, year = {2021}, volume = {29}, number = {3}, pages = {747--766}, abstract = {
In this paper we propose a new nonlinear cell-centered finite volume scheme on general polygonal meshes for two dimensional anisotropic diffusion problems, which preserves discrete maximum principle (DMP). The scheme is based on the so-called diamond scheme with a nonlinear treatment on its tangential flux to obtain a local maximum principle (LMP) structure. It is well-known that existing DMP preserving diffusion schemes suffer from the fact that auxiliary unknowns should be presented as a convex combination of primary unknowns. In this paper, to get rid of this constraint a nonlinearization strategy is introduced and it requires only a second-order accurate approximation for auxiliary unknowns. Numerical results show that this scheme has second-order accuracy, preserves maximum and minimum for solutions and is conservative.
}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.OA-2020-0047}, url = {http://global-sci.org/intro/article_detail/cicp/18565.html} }