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A simple shock-capturing technique for high-order discontinuous Galerkin methods
dc.contributor.author | Huerta, Antonio |
dc.contributor.author | Casoni Rero, Eva |
dc.contributor.author | Peraire Guitart, Jaume |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental |
dc.date.accessioned | 2015-11-16T19:09:39Z |
dc.date.available | 2015-11-16T19:09:39Z |
dc.date.issued | 2012-08 |
dc.identifier.citation | Huerta, A., Casoni, E., Peraire, J. A simple shock-capturing technique for high-order discontinuous Galerkin methods. "International journal for numerical methods in fluids", Agost 2012, vol. 69, núm. 10, p. 1614-1632. |
dc.identifier.issn | 0271-2091 |
dc.identifier.uri | http://hdl.handle.net/2117/79336 |
dc.description | This is the accepted version of the following article: [Huerta, A., Casoni, E. and Peraire, J. (2012), A simple shock-capturing technique for high-order discontinuous Galerkin methods. Int. J. Numer. Meth. Fluids, 69: 1614–1632. doi:10.1002/fld.2654], which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/fld.2654/full |
dc.description.abstract | This article presents a novel shock-capturing technique for the discontinuous Galerkin (DG) method. The technique is designed for compressible flow problems, which are usually characterized by the presence of strong shocks and discontinuities. The inherent structure of standard DG methods seems to suggest that they are especially adapted to capture shocks because of the numerical fluxes based on suitable approximate Riemann solvers, which, in practice, introduces some stabilization. However, the usual numerical fluxes are not sufficient to stabilize the solution in the presence of shocks for large high-order elements. Here, a new basis of shape functions is introduced. It has the ability to change locally between a continuous or discontinuous interpolation depending on the smoothness of the approximated function. In the presence of shocks, the new discontinuities inside an element introduce the required stabilization because of numerical fluxes. Large high-order elements can therefore be used and shocks captured within a single element, avoiding adaptive mesh refinement and preserving the locality and compactness of the DG scheme. Several numerical examples for transonic and supersonic flows are studied to demonstrate the applicability of the proposed approach. |
dc.format.extent | 19 p. |
dc.language.iso | eng |
dc.subject | Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits |
dc.subject | Àrees temàtiques de la UPC::Física::Física de fluids |
dc.subject.lcsh | Galerkin methods |
dc.subject.other | Adaptivity |
dc.subject.other | Compressible flow |
dc.subject.other | Discontinous enrichment |
dc.subject.other | Discontinuous Galerkin |
dc.subject.other | Euler equations |
dc.subject.other | Euler flow |
dc.subject.other | High order |
dc.subject.other | Shock-capturing |
dc.title | A simple shock-capturing technique for high-order discontinuous Galerkin methods |
dc.type | Article |
dc.subject.lemac | Galerkin, Mètodes de |
dc.contributor.group | Universitat Politècnica de Catalunya. LACÀN - Mètodes Numèrics en Ciències Aplicades i Enginyeria |
dc.identifier.doi | 10.1002/fld.2654 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://onlinelibrary.wiley.com/doi/10.1002/fld.2654/abstract |
dc.rights.access | Open Access |
local.identifier.drac | 8736164 |
dc.description.version | Postprint (author's final draft) |
local.citation.author | Huerta, A.; Casoni, E.; Peraire, J. |
local.citation.publicationName | International journal for numerical methods in fluids |
local.citation.volume | 69 |
local.citation.number | 10 |
local.citation.startingPage | 1614 |
local.citation.endingPage | 1632 |
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