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Paper detail

Robust finite element discretizations for a simplified Galbrun's equation

Driven by the challenging task of finding robust discretization methods for Galbrun's equation, we investigate conditions for stability and different aspects of robustness for different finite element schemes on a simplified version of the equations. The considered PDE is a second order indefinite vector-PDE which remains if only the highest order terms of Galbrun's equation are taken into account. A key property for stability is a Helmholtz-type decomposition which results in a strong connection between stable discretizations for Galbrun's equation and Stokes and nearly incompressible linear elasticity problems.

preprint2022arXivOpen access
Tilman AlemánMartin HallaChristoph LehrenfeldPaul Stocker
math.NANumerical Analysis
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Tilman AlemánMartin HallaChristoph LehrenfeldPaul Stocker

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