A plane wave virtual element method for the Helmholtz problem (Q2814657)

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scientific article; zbMATH DE number 6596743
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A plane wave virtual element method for the Helmholtz problem
scientific article; zbMATH DE number 6596743

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    A plane wave virtual element method for the Helmholtz problem (English)
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    22 June 2016
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    Helmholtz equation
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    virtual element method
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    plane wave basis functions
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    error analysis
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    duality estimates
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    stabilization
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    convergence
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    numerical result
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    Plane wave functions are a particular case of Trefftz functions for Helmholtz problem. As a first construction of a plane-virtual element method (PW-VEM), the authrs focus here on the 2D Helmholtz problem with impedance boundary conditions on the whole domain boundary. On polygonal meshes, these basis functions are products of low order VEM functions associated to the mesh vertices, multiplied by a linear combination of \(p\) plane waves centered at the corresponding vertices. The analyzed of the \(h\)-version of the method is given in an abstract form. Some numerical tests are presented.
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