2021
DOI: 10.1002/cmm4.1207
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A block preconditioner for two‐phase flow in porous media by mixed hybrid finite elements

Abstract: In this work, we present an original block preconditioner to improve the convergence of Krylov solvers for the simulation of two-phase flow in porous media. In our modeling approach, the set of coupled governing equations is addressed in a fully implicit fashion, where Darcy's law and mass conservation are discretized in an original way by combining the mixed hybrid finite element (MHFE) and the finite volume (FV) methods. The solution to the sequence of large-size nonsymmetric linearized systems of equations … Show more

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Cited by 5 publications
(1 citation statement)
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“…Recently, different methods based on a Schur Complement Reduction have been presented 36,37 . In Reference 38, the authors consider an original block preconditioner which exploits the block structure of the Jacobian matrix while coping with the nonsymmetric nature of the individual blocks. Same authors propose in Reference 39 a novel preconditioning technique (EDFA) based on the approximation of the decoupling factors of the system matrix by using appropriate restriction operators for the sake of the Schur complement computation.…”
Section: Introductionmentioning
confidence: 99%
“…Recently, different methods based on a Schur Complement Reduction have been presented 36,37 . In Reference 38, the authors consider an original block preconditioner which exploits the block structure of the Jacobian matrix while coping with the nonsymmetric nature of the individual blocks. Same authors propose in Reference 39 a novel preconditioning technique (EDFA) based on the approximation of the decoupling factors of the system matrix by using appropriate restriction operators for the sake of the Schur complement computation.…”
Section: Introductionmentioning
confidence: 99%