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A variational multiscale method with subscales on the element boundaries for the Helmholtz equation

Autor
Baiges, J.; Codina, R.
Tipus d'activitat
Article en revista
Revista
International journal for numerical methods in engineering
Data de publicació
2013-02
Volum
93
Número
6
Pàgina inicial
664
Pàgina final
684
DOI
https://doi.org/10.1002/nme.4406 Obrir en finestra nova
Projecte finançador
VALidation and Improvement of Airframe Noise prediction Tools. ACP8-GA-2009-233680
URL
http://onlinelibrary.wiley.com/doi/10.1002/nme.4406/abstract Obrir en finestra nova
Resum
In this paper, we apply the variational multiscale method with subgrid scales on the element boundaries to the problem of solving the Helmholtz equation with low-order finite elements. The expression for the subscales is obtained by imposing the continuity of fluxes across the interelement boundaries. The stabilization parameter is determined by performing a dispersion analysis, yielding the optimal values for the different discretizations and finite element mesh configurations. The performance ...
Paraules clau
Helmholtz equation, finite element methods, stability, variational multiscale
Grup de recerca
(MC)2 - UPC Mecànica de Medis Continus i Computacional
ANiComp - Anàlisi numèrica i computació científica

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