Force methods for the two-relaxation-times lattice Boltzmann

Detalhes bibliográficos
Autor(a) principal: Silva, Goncalo
Data de Publicação: 2020
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/29396
https://doi.org/10.1103/PhysRevE.102.063307
Resumo: The two-relaxation-times collision benefits the steady lattice Boltzmann method by yielding viscosity-independent numerical errors. We present in an intuitive way how to incorporate popular force methods into the two-relaxation-times collision. We subsequently rewrite force methods into a generic equation to reveal commonalities and differences. We prove that force methods with a second-order velocity moment of the force break the viscosity independence. A force method with only a first-order velocity moment of the force averts this breakage. We validate our proof numerically.
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spelling Force methods for the two-relaxation-times lattice BoltzmannLattice Boltzmann MethodTwo-Relaxation-TimeForce MethodsFluid MechanicsThe two-relaxation-times collision benefits the steady lattice Boltzmann method by yielding viscosity-independent numerical errors. We present in an intuitive way how to incorporate popular force methods into the two-relaxation-times collision. We subsequently rewrite force methods into a generic equation to reveal commonalities and differences. We prove that force methods with a second-order velocity moment of the force break the viscosity independence. A force method with only a first-order velocity moment of the force averts this breakage. We validate our proof numerically.American Physical Society2021-03-26T11:23:19Z2021-03-262020-12-28T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/29396http://hdl.handle.net/10174/29396https://doi.org/10.1103/PhysRevE.102.063307porgoncalo.nuno.silva@gmail.com449Silva, Goncaloinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:24:54Zoai:dspace.uevora.pt:10174/29396Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:18:24.958251Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Force methods for the two-relaxation-times lattice Boltzmann
title Force methods for the two-relaxation-times lattice Boltzmann
spellingShingle Force methods for the two-relaxation-times lattice Boltzmann
Silva, Goncalo
Lattice Boltzmann Method
Two-Relaxation-Time
Force Methods
Fluid Mechanics
title_short Force methods for the two-relaxation-times lattice Boltzmann
title_full Force methods for the two-relaxation-times lattice Boltzmann
title_fullStr Force methods for the two-relaxation-times lattice Boltzmann
title_full_unstemmed Force methods for the two-relaxation-times lattice Boltzmann
title_sort Force methods for the two-relaxation-times lattice Boltzmann
author Silva, Goncalo
author_facet Silva, Goncalo
author_role author
dc.contributor.author.fl_str_mv Silva, Goncalo
dc.subject.por.fl_str_mv Lattice Boltzmann Method
Two-Relaxation-Time
Force Methods
Fluid Mechanics
topic Lattice Boltzmann Method
Two-Relaxation-Time
Force Methods
Fluid Mechanics
description The two-relaxation-times collision benefits the steady lattice Boltzmann method by yielding viscosity-independent numerical errors. We present in an intuitive way how to incorporate popular force methods into the two-relaxation-times collision. We subsequently rewrite force methods into a generic equation to reveal commonalities and differences. We prove that force methods with a second-order velocity moment of the force break the viscosity independence. A force method with only a first-order velocity moment of the force averts this breakage. We validate our proof numerically.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-28T00:00:00Z
2021-03-26T11:23:19Z
2021-03-26
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/29396
http://hdl.handle.net/10174/29396
https://doi.org/10.1103/PhysRevE.102.063307
url http://hdl.handle.net/10174/29396
https://doi.org/10.1103/PhysRevE.102.063307
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv goncalo.nuno.silva@gmail.com
449
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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