Stability, convergence, and accuracy of stabilized finite element methods for the wave equation in mixed form (Q2927830)

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scientific article; zbMATH DE number 6365778
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Stability, convergence, and accuracy of stabilized finite element methods for the wave equation in mixed form
scientific article; zbMATH DE number 6365778

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    4 November 2014
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    wave equation
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    finite element methods
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    variational multiscale method
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    convergence
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    stability
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    numerical experiment
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    Stability, convergence, and accuracy of stabilized finite element methods for the wave equation in mixed form (English)
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    The authors propose two stabilized finite element methods for the wave equation in mixed form. \textit{R. Codina} [Comput. Methods Appl. Mech. Eng. 197, No. 13--16, 1305--1322 (2008; Zbl 1162.65388)] had approximated the mixed wave equation using the orthogonal subscale stabilization (OSS) method. In this paper the authors extend the OSS method and consider also the algebraic subgrid scale (ASGS) method. Stability for OSS and ASGS methods applied to the wave equation in mixed form is proved. Theoretical convergence rates for OSS and ASGS methods are found. Numerical experiments are also given.
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