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http://hdl.handle.net/11422/8737
Especie: | Artigo |
Título : | Discontinuous subgrid formulations for transport problems |
Autor(es)/Inventor(es): | Arruda, Natália Cristina Braga Almeida, Regina Célia Cerqueira de Carmo, Eduardo Gomes Dutra do |
Resumen: | Indisponível. |
Resumen: | In this paper we develop two discontinuous Galerkin formulations within the framework of the two-scale subgrid method for solving advection–diffusion-reaction equations. We reformulate, using broken spaces, the nonlinear subgrid scale (NSGS) finite element model in which a nonlinear eddy viscosity term is introduced only to the subgrid scales of a finite element mesh. Here, two new subgrid formulations are built by introducing subgrid stabilized terms either at the element level or on the edges by means of the residual of the approximated resolved scale solution inside each element and the jump of the subgrid solution across interelement edges. The amount of subgrid viscosity is scaled by the resolved scale solution at the element level, yielding a self adaptive method so that no additional stabilization parameter is required. Numerical experiments are conducted in order to demonstrate the behavior of the proposed methodology in comparison with some discontinuous Galerkin methods. |
Materia: | Discontinuous Galerkin Two-scale finite element model Advection–diffusion-reaction equations |
Materia CNPq: | CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS |
Unidade de producción: | Núcleo Interdisciplinar de Dinâmica dos Fluidos |
Editor: | Elsevier |
Es parte de: | Computer Methods in Applied Mechanics and Engineering |
Volumen: | 199 |
Número: | 49-52 |
Fecha de publicación: | 1-jul-2010 |
DOI: | 10.1016/j.cma.2010.06.028 |
País de edición : | Brasil |
Idioma de publicación: | eng |
Tipo de acceso : | Acesso Aberto |
ISSN: | 0045-7825 |
Aparece en las colecciones: | Engenharias |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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ARRUDA_v199_p3227-3236-min.pdf | 464.61 kB | Adobe PDF | Visualizar/Abrir |
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