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The dissipative structure of variational multiscale methods for incompressible flows
dc.contributor.author | Principe, Ricardo Javier |
dc.contributor.author | Codina, Ramon |
dc.contributor.author | Henke, Florian |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Resistència de Materials i Estructures a l'Enginyeria |
dc.date.accessioned | 2010-05-06T11:40:35Z |
dc.date.available | 2010-05-06T11:40:35Z |
dc.date.created | 2010-02-01 |
dc.date.issued | 2010-02-01 |
dc.identifier.citation | Principe, R.; Codina, R.; Henke, F. The dissipative structure of variational multiscale methods for incompressible flows. "Computer methods in applied mechanics and engineering", 01 Febrer 2010, vol. 199, núm. 13-16, p. 791-801. |
dc.identifier.issn | 0045-7825 |
dc.identifier.uri | http://hdl.handle.net/2117/7134 |
dc.description.abstract | In this paper, we present a precise definition of the numerical dissipation for the orthogonal projection version of the variational multiscale method for incompressible flows. We show that, only if the space of subscales is taken orthogonal to the finite element space, this definition is physically reasonable as the coarse and fine scales are properly separated. Then we compare the diffusion introduced by the numerical discretization of the problem with the diffusion introduced by a large eddy simulation model. Results for the flow around a surface-mounted obstacle problem show that numerical dissipation is of the same order as the subgrid dissipation introduced by the Smagorinsky model. Finally, when transient subscales are considered, the model is able to predict backscatter, something that is only possible when dynamic LES closures are used. Numerical evidence supporting this point is also presented. |
dc.format.extent | 11 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Informàtica::Aplicacions de la informàtica::Aplicacions informàtiques a la física i l‘enginyeria |
dc.subject.lcsh | Finite element method -- Mathematical models |
dc.title | The dissipative structure of variational multiscale methods for incompressible flows |
dc.type | Article |
dc.subject.lemac | Elements finits, Mètode dels -- Informàtica |
dc.contributor.group | Universitat Politècnica de Catalunya. (MC)2 - Grup de Mecànica Computacional en Medis Continus |
dc.identifier.doi | 10.1016/j.cma.2008.09.007 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V29-4THJGHG-1&_user=1517299&_coverDate=02%2F01%2F2010&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=1244369577&_rerunOrigin=google&_acct=C000053450&_version=1&_urlVersion=0&_userid=1517299&md5=f80addb0753b9b693e517f8144ee52f1 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 2191415 |
dc.description.version | Postprint (published version) |
local.citation.author | Principe, R.; Codina, R.; Henke, F. |
local.citation.publicationName | Computer methods in applied mechanics and engineering |
local.citation.volume | 199 |
local.citation.number | 13-16 |
local.citation.startingPage | 791 |
local.citation.endingPage | 801 |
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