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• W3012804590 startingPage "3004" @default.
• W3012804590 abstract "Summary Fictitious domain methods, like the Cartesian grid finite element method (cgFEM), are based on the use of unfitted meshes that must be intersected. This may yield to ill‐conditioned systems of equations since the stiffness associated with a node could be small, thus poorly contributing to the energy of the problem. This issue complicates the use of iterative solvers for large problems. In this work, we present a new stabilization technique that, in the case of cgFEM, preserves the Cartesian structure of the mesh. The formulation consists in penalizing the free movement of those nodes by a smooth extension of the solution from the interior of the domain, through a postprocess of the solution via a displacement recovery technique. The numerical results show an improvement of the condition number and a decrease in the number of iterations of the iterative solver while preserving the problem accuracy." @default.
• W3012804590 created "2020-03-27" @default.
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• W3012804590 date "2020-03-22" @default.
• W3012804590 modified "2023-10-14" @default.
• W3012804590 title "On the use of stabilization techniques in the Cartesian grid finite element method framework for iterative solvers" @default.
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• W3012804590 doi "https://doi.org/10.1002/nme.6344" @default.
• W3012804590 hasPublicationYear "2020" @default.
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