ON THE INFLUENCE OF DIFFUSION STABILIZATION IN OLDROYD-B FLUID FLOW SIMULATIONS

Detalhes bibliográficos
Autor(a) principal: Pires, Marília
Data de Publicação: 2020
Outros Autores: Bodnar, Tomas
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/30426
https://doi.org/10.14311/TPFM.2020.023
Resumo: This work presents some numerical tests of finite element solution of incompressible Oldroyd-B fluid flows. The effect of numerical stabilization using arti cial stress diffusion is investigated in detail. The limits of Weissenberg number We for which is possible to obtain the numerical solution were studied depending on the Reynolds number Re and the diffusion parameter. Series of numerical tests was performed for steady two-dimensional Oldroyd-B fluid flow in corrugated channel (tube). The numerical results clearly proved the advantage (higher attainable We) of stabilized numerical method over the classical formulation without the arti ficial stress diffusion.
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spelling ON THE INFLUENCE OF DIFFUSION STABILIZATION IN OLDROYD-B FLUID FLOW SIMULATIONSFinite Element MethodOldroyd-B FluidNumerical Stabilization,Stress Diffusion.This work presents some numerical tests of finite element solution of incompressible Oldroyd-B fluid flows. The effect of numerical stabilization using arti cial stress diffusion is investigated in detail. The limits of Weissenberg number We for which is possible to obtain the numerical solution were studied depending on the Reynolds number Re and the diffusion parameter. Series of numerical tests was performed for steady two-dimensional Oldroyd-B fluid flow in corrugated channel (tube). The numerical results clearly proved the advantage (higher attainable We) of stabilized numerical method over the classical formulation without the arti ficial stress diffusion.The financial support for the present project was partly provided by the Funda c~ao para a Ciência e a Tecnologia - FCT under the Grant Ref. SFRH/BSAB/150464/2019 and partly by the Czech Science Foundation under the grant No. P201-19-04243S.In Proceedings Topical Problems of Fluid Mechanics 20202021-12-03T15:03:52Z2021-12-032020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/30426http://hdl.handle.net/10174/30426https://doi.org/10.14311/TPFM.2020.023eng978-80-87012-74-1 (Print)ISSN 2336-5781 (Print)marilia@uevora.ptTomas.Bodnar@fs.cvut.cz335Pires, MaríliaBodnar, Tomasinfo: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:RCAAP2024-01-03T19:27:58Zoai:dspace.uevora.pt:10174/30426Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:19:41.252052Repositório 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 ON THE INFLUENCE OF DIFFUSION STABILIZATION IN OLDROYD-B FLUID FLOW SIMULATIONS
title ON THE INFLUENCE OF DIFFUSION STABILIZATION IN OLDROYD-B FLUID FLOW SIMULATIONS
spellingShingle ON THE INFLUENCE OF DIFFUSION STABILIZATION IN OLDROYD-B FLUID FLOW SIMULATIONS
Pires, Marília
Finite Element Method
Oldroyd-B Fluid
Numerical Stabilization,
Stress Diffusion.
title_short ON THE INFLUENCE OF DIFFUSION STABILIZATION IN OLDROYD-B FLUID FLOW SIMULATIONS
title_full ON THE INFLUENCE OF DIFFUSION STABILIZATION IN OLDROYD-B FLUID FLOW SIMULATIONS
title_fullStr ON THE INFLUENCE OF DIFFUSION STABILIZATION IN OLDROYD-B FLUID FLOW SIMULATIONS
title_full_unstemmed ON THE INFLUENCE OF DIFFUSION STABILIZATION IN OLDROYD-B FLUID FLOW SIMULATIONS
title_sort ON THE INFLUENCE OF DIFFUSION STABILIZATION IN OLDROYD-B FLUID FLOW SIMULATIONS
author Pires, Marília
author_facet Pires, Marília
Bodnar, Tomas
author_role author
author2 Bodnar, Tomas
author2_role author
dc.contributor.author.fl_str_mv Pires, Marília
Bodnar, Tomas
dc.subject.por.fl_str_mv Finite Element Method
Oldroyd-B Fluid
Numerical Stabilization,
Stress Diffusion.
topic Finite Element Method
Oldroyd-B Fluid
Numerical Stabilization,
Stress Diffusion.
description This work presents some numerical tests of finite element solution of incompressible Oldroyd-B fluid flows. The effect of numerical stabilization using arti cial stress diffusion is investigated in detail. The limits of Weissenberg number We for which is possible to obtain the numerical solution were studied depending on the Reynolds number Re and the diffusion parameter. Series of numerical tests was performed for steady two-dimensional Oldroyd-B fluid flow in corrugated channel (tube). The numerical results clearly proved the advantage (higher attainable We) of stabilized numerical method over the classical formulation without the arti ficial stress diffusion.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01T00:00:00Z
2021-12-03T15:03:52Z
2021-12-03
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/10174/30426
http://hdl.handle.net/10174/30426
https://doi.org/10.14311/TPFM.2020.023
url http://hdl.handle.net/10174/30426
https://doi.org/10.14311/TPFM.2020.023
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 978-80-87012-74-1 (Print)
ISSN 2336-5781 (Print)
marilia@uevora.pt
Tomas.Bodnar@fs.cvut.cz
335
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv In Proceedings Topical Problems of Fluid Mechanics 2020
publisher.none.fl_str_mv In Proceedings Topical Problems of Fluid Mechanics 2020
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
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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
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