English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/132705
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

A variational multiscale stabilized finite element method for the solution of the Euler equations of nonhydrostatic stratified flows

AutorMarras, Simone; Moragues, Margarida; Vázquez, Mariano; Jorbal, Oriol; Houzeaux, Guillaume
Palabras claveVariational multiscale stabilization
Nonhydrostatic flows
Finite element method
Euler equations
Fecha de publicación2013
CitaciónJournal of Computational Physics 236 (1): 380- 407 (2013)
ResumenWe present a compressible version of the variational multiscale stabilization (VMS) method applied to the finite element (FE) solution of the Euler equations for nonhydrostatic stratified flows. This paper is meant to verify how the algorithm performs when solving problems in the framework of nonhydrostatic atmospheric dynamics. This effort is justified by the previously observed good performance of VMS and by the advantages that a compact Galerkin formulation offers on massively parallel architectures - a paradigm for both computational fluid dynamics (CFD) and numerical weather prediction (NWP) practitioners. We also propose a simple technique to construct a well-balanced approximation of the dominant hydrostatics that, if not properly discretized, may cause unacceptable vertical oscillations. This is a relevant problem in NWP, especially in the proximity of steep topography. To evaluate the performance of the method for stratified environments, six standard 2D and two 3D test cases are selected. Of these, two admit a semi-analytic solution, while the remaining six are non-steady and non-linear thermal problems with dominant buoyancy effects that challenge the algorithm in terms of stability. © 2012 Elsevier Inc..
Identificadoresdoi: 10.1016/j.jcp.2012.10.056
issn: 0021-9991
Aparece en las colecciones: (IIIA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.