Geodesic
On the solution of evolution equations based on multigrid and explicit iterative methods
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 55 (2015) no. 8, pp. 1305-1319 
V. T. Zhukov; N. D. Novikova; O. B. Feodoritova. On the solution of evolution equations based on multigrid and explicit iterative methods. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 55 (2015) no. 8, pp. 1305-1319. http://geodesic.mathdoc.fr/item/ZVMMF_2015_55_8_a3/
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     author = {V. T. Zhukov and N. D. Novikova and O. B. Feodoritova},
     title = {On the solution of evolution equations based on multigrid and explicit iterative methods},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1305--1319},
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     volume = {55},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2015_55_8_a3/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

Two schemes for solving initial–boundary value problems for three-dimensional parabolic equations are studied. One is implicit and is solved using the multigrid method, while the other is explicit iterative and is based on optimal properties of the Chebyshev polynomials. In the explicit iterative scheme, the number of iteration steps and the iteration parameters are chosen as based on the approximation and stability conditions, rather than on the optimization of iteration convergence to the solution of the implicit scheme. The features of the multigrid scheme include the implementation of the intergrid transfer operators for the case of discontinuous coefficients in the equation and the adaptation of the smoothing procedure to the spectrum of the difference operators. The results produced by these schemes as applied to model problems with anisotropic discontinuous coefficients are compared.

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