A multiscale mortar multipoint flux mixed finite element method
Mary Fanett Wheeler, Guangri Xue, Ivan Yotov (2012)
ESAIM: Mathematical Modelling and Numerical Analysis
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In this paper, we develop a multiscale mortar multipoint flux mixed finite element method for second order elliptic problems. The equations in the coarse elements (or subdomains) are discretized on a fine grid scale by a multipoint flux mixed finite element method that reduces to cell-centered finite differences on irregular grids. The subdomain grids do not have to match across the interfaces. Continuity of flux between coarse elements is imposed a mortar finite element space on a coarse...