An adaptive mesh strategy for high compressible flows based on nodal re-allocation
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/75803 |
Resumo: | An adaptive mesh strategy based on nodal re-allocation is presented in this work. This technique is applied to problems involving compressible flows with strong shocks waves, improving the accuracy and efficiency of the numerical solution. The initial mesh is continuously adapted during the solution process keeping, as much as possible, mesh smoothness and local orthogonality using an unconstrained nonlinear optimization method. The adaptive procedure, which is coupled to an edge-based error estimate aiming to equidistribute the error over the cell edges is the main contribution of this work. The flow is simulated using the Finite Element Method (FEM) with an explicit one-step Taylor- Galerkin scheme, in which an Arbitrary Lagrangean-Eulerian (ALE) description is employed to take into account mesh movement. Finally, to demonstrate the capabilities of the adaptive process, several examples of compressible inviscid flows are presented. |
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Bono, GustavoAwruch, Armando Miguel2013-07-11T02:22:23Z20081806-3691http://hdl.handle.net/10183/75803000679253An adaptive mesh strategy based on nodal re-allocation is presented in this work. This technique is applied to problems involving compressible flows with strong shocks waves, improving the accuracy and efficiency of the numerical solution. The initial mesh is continuously adapted during the solution process keeping, as much as possible, mesh smoothness and local orthogonality using an unconstrained nonlinear optimization method. The adaptive procedure, which is coupled to an edge-based error estimate aiming to equidistribute the error over the cell edges is the main contribution of this work. The flow is simulated using the Finite Element Method (FEM) with an explicit one-step Taylor- Galerkin scheme, in which an Arbitrary Lagrangean-Eulerian (ALE) description is employed to take into account mesh movement. Finally, to demonstrate the capabilities of the adaptive process, several examples of compressible inviscid flows are presented.application/pdfengJournal of the Brazilian Society of Mechanical Sciences and Engineering. Rio de Janeiro, RJ. Vol. 30, no. 3 (July/Sept. 2008), p. 189-196Elementos finitosFluidos compressíveisEscoamento compressívelAdaptive mesh strategyHigh compressible flowsFinite element methodAn adaptive mesh strategy for high compressible flows based on nodal re-allocationinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000679253.pdf000679253.pdfTexto completo (inglês)application/pdf309723http://www.lume.ufrgs.br/bitstream/10183/75803/1/000679253.pdffc45e3899b76fa12084af70ba0da7bb9MD51TEXT000679253.pdf.txt000679253.pdf.txtExtracted Texttext/plain36862http://www.lume.ufrgs.br/bitstream/10183/75803/2/000679253.pdf.txtf1a36759b93499934058dca8d2149a21MD52THUMBNAIL000679253.pdf.jpg000679253.pdf.jpgGenerated Thumbnailimage/jpeg2061http://www.lume.ufrgs.br/bitstream/10183/75803/3/000679253.pdf.jpge884af27c3515a837a448cb3ea1f2c6fMD5310183/758032022-04-28 04:40:50.967317oai:www.lume.ufrgs.br:10183/75803Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2022-04-28T07:40:50Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
An adaptive mesh strategy for high compressible flows based on nodal re-allocation |
title |
An adaptive mesh strategy for high compressible flows based on nodal re-allocation |
spellingShingle |
An adaptive mesh strategy for high compressible flows based on nodal re-allocation Bono, Gustavo Elementos finitos Fluidos compressíveis Escoamento compressível Adaptive mesh strategy High compressible flows Finite element method |
title_short |
An adaptive mesh strategy for high compressible flows based on nodal re-allocation |
title_full |
An adaptive mesh strategy for high compressible flows based on nodal re-allocation |
title_fullStr |
An adaptive mesh strategy for high compressible flows based on nodal re-allocation |
title_full_unstemmed |
An adaptive mesh strategy for high compressible flows based on nodal re-allocation |
title_sort |
An adaptive mesh strategy for high compressible flows based on nodal re-allocation |
author |
Bono, Gustavo |
author_facet |
Bono, Gustavo Awruch, Armando Miguel |
author_role |
author |
author2 |
Awruch, Armando Miguel |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Bono, Gustavo Awruch, Armando Miguel |
dc.subject.por.fl_str_mv |
Elementos finitos Fluidos compressíveis Escoamento compressível |
topic |
Elementos finitos Fluidos compressíveis Escoamento compressível Adaptive mesh strategy High compressible flows Finite element method |
dc.subject.eng.fl_str_mv |
Adaptive mesh strategy High compressible flows Finite element method |
description |
An adaptive mesh strategy based on nodal re-allocation is presented in this work. This technique is applied to problems involving compressible flows with strong shocks waves, improving the accuracy and efficiency of the numerical solution. The initial mesh is continuously adapted during the solution process keeping, as much as possible, mesh smoothness and local orthogonality using an unconstrained nonlinear optimization method. The adaptive procedure, which is coupled to an edge-based error estimate aiming to equidistribute the error over the cell edges is the main contribution of this work. The flow is simulated using the Finite Element Method (FEM) with an explicit one-step Taylor- Galerkin scheme, in which an Arbitrary Lagrangean-Eulerian (ALE) description is employed to take into account mesh movement. Finally, to demonstrate the capabilities of the adaptive process, several examples of compressible inviscid flows are presented. |
publishDate |
2008 |
dc.date.issued.fl_str_mv |
2008 |
dc.date.accessioned.fl_str_mv |
2013-07-11T02:22:23Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/75803 |
dc.identifier.issn.pt_BR.fl_str_mv |
1806-3691 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000679253 |
identifier_str_mv |
1806-3691 000679253 |
url |
http://hdl.handle.net/10183/75803 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Rio de Janeiro, RJ. Vol. 30, no. 3 (July/Sept. 2008), p. 189-196 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
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UFRGS |
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UFRGS |
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Repositório Institucional da UFRGS |
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Repositório Institucional da UFRGS |
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