<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">E. Abreu</style></author><author><style face="normal" font="default" size="100%">P. Ferraz</style></author><author><style face="normal" font="default" size="100%">A.M. {Espírito Santo}</style></author><author><style face="normal" font="default" size="100%">F. Pereira</style></author><author><style face="normal" font="default" size="100%">L.G.C. Santos</style></author><author><style face="normal" font="default" size="100%">F.S. Sousa</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Recursive formulation and parallel implementation of multiscale mixed methods</style></title><secondary-title><style face="normal" font="default" size="100%">Journal of Computational Physics</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Darcy's law</style></keyword><keyword><style  face="normal" font="default" size="100%">Domain decomposition</style></keyword><keyword><style  face="normal" font="default" size="100%">Fluid dynamics in porous media</style></keyword><keyword><style  face="normal" font="default" size="100%">Mixed finite elements</style></keyword><keyword><style  face="normal" font="default" size="100%">Parallelization</style></keyword><keyword><style  face="normal" font="default" size="100%">Recursive Multiscale Robin Coupled Method</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2023</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.sciencedirect.com/science/article/pii/S0021999122007446</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">473</style></volume><pages><style face="normal" font="default" size="100%">111681</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Multiscale methods for second order elliptic equations based on non-overlapping domain decomposition schemes have great potential to take advantage of multi-core, state-of-the-art parallel computers. These methods typically involve solving local boundary value problems followed by the solution of a global interface problem. Known iterative procedures for the solution of the interface problem have typically slow convergence, increasing the overall cost of the multiscale solver. To overcome this problem we develop a scalable recursive solution method for such interface problem that replaces the global problem by a family of small interface systems associated with adjacent subdomains, in a hierarchy of nested subdomains. Then, we propose a novel parallel algorithm to implement our recursive formulation in multi-core devices using the Multiscale Robin Coupled Method by Guiraldello et al. (2018) [26], that can be seen as a generalization of several multiscale mixed methods. Through several numerical studies we show that the new algorithm is very fast and exhibits excellent strong and weak scalability. We consider very large problems, that can have billions of discretization cells, motivated by the numerical simulation of subsurface flows.&lt;/p&gt;
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