Geodesic
Solving the problem of non-stationary filtration of substance by the discontinuous Galerkin method on unstructured grids
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 56 (2016) no. 6, pp. 989-998 Cet article a éte moissonné depuis la source Math-Net.Ru

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A numerical algorithm is proposed for solving the problem of non-stationary filtration of substance in anisotropic media by the Galerkin method with discontinuous basis functions on unstructured triangular grids. A characteristic feature of this method is that the flux variables are considered on the dual grid. The dual grid comprises median control volumes around the nodes of the original triangular grid. The flux values of the quantities on the boundary of an element are calculated with the help of stabilizing additions. For averaging the permeability tensor over the cells of the dual grid, the method of support operators is applied. The method is studied on the example of a two-dimensional boundary value problem. The convergence and approximation of the numerical method are analyzed, and results of mathematical modeling are presented. The numerical results demonstrate the applicability of this approach for solving problems of non-stationary filtration of substance in anisotropic media by the discontinuous Galerkin method on unstructured triangular grids. 
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     title = {Solving the problem of non-stationary filtration of substance by the discontinuous {Galerkin} method on unstructured grids},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
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R. V. Zhalnin; M. E. Ladonkina; V. F. Masyagin; V. F. Tishkin. Solving the problem of non-stationary filtration of substance by the discontinuous Galerkin method on unstructured grids. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 56 (2016) no. 6, pp. 989-998. http://geodesic.mathdoc.fr/item/ZVMMF_2016_56_6_a5/

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