Numerical study of micromixing combining alternate flow and obstacles

Detalhes bibliográficos
Autor(a) principal: Miranda, J. M.
Data de Publicação: 2010
Outros Autores: Oliveira, Hugo Carneiro, Teixeira, J. A., Vicente, A. A., Correia, J. H., Minas, Graça
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/16823
Resumo: Mixing in microsystems, combining alternate flow with obstacles, is studied by numerical methods. Simulations show that the layers of high and low solute concentrations, created by the alternate flow, are split into smaller chunks of fluid by obstacles inserted in the mixing channel, decreasing the critical mixing length. Reverse flow is necessary to guarantee symmetry and good mixing. Mixing increases with the increase of the number of obstacles. Increase of frequency improves mixing but requires an increase of reverse flow. The improvement in the mixing process shows that this method is very useful for designing mixers for lab-on-a-chip devices.
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spelling Numerical study of micromixing combining alternate flow and obstaclesAlternate flowFluidic mixerPassive mixingActive mixingMicrofluidicsScience & TechnologyMixing in microsystems, combining alternate flow with obstacles, is studied by numerical methods. Simulations show that the layers of high and low solute concentrations, created by the alternate flow, are split into smaller chunks of fluid by obstacles inserted in the mixing channel, decreasing the critical mixing length. Reverse flow is necessary to guarantee symmetry and good mixing. Mixing increases with the increase of the number of obstacles. Increase of frequency improves mixing but requires an increase of reverse flow. The improvement in the mixing process shows that this method is very useful for designing mixers for lab-on-a-chip devices.Support for this research was provided by the Engineering School of University of Minho (program IN2TEC) and the Portuguese Science Foundation (grant FTDC/B10/70017/2006 and grant SFRH/BPD/17689/2004).Pergamon-Elsevier Science LtdUniversidade do MinhoMiranda, J. M.Oliveira, Hugo CarneiroTeixeira, J. A.Vicente, A. A.Correia, J. H.Minas, Graça2010-032010-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/16823eng0735-193310.1016/j.icheatmasstransfer.2010.01.012info: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:RCAAP2023-07-21T12:51:57Zoai:repositorium.sdum.uminho.pt:1822/16823Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:50:59.006607Repositório 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 Numerical study of micromixing combining alternate flow and obstacles
title Numerical study of micromixing combining alternate flow and obstacles
spellingShingle Numerical study of micromixing combining alternate flow and obstacles
Miranda, J. M.
Alternate flow
Fluidic mixer
Passive mixing
Active mixing
Microfluidics
Science & Technology
title_short Numerical study of micromixing combining alternate flow and obstacles
title_full Numerical study of micromixing combining alternate flow and obstacles
title_fullStr Numerical study of micromixing combining alternate flow and obstacles
title_full_unstemmed Numerical study of micromixing combining alternate flow and obstacles
title_sort Numerical study of micromixing combining alternate flow and obstacles
author Miranda, J. M.
author_facet Miranda, J. M.
Oliveira, Hugo Carneiro
Teixeira, J. A.
Vicente, A. A.
Correia, J. H.
Minas, Graça
author_role author
author2 Oliveira, Hugo Carneiro
Teixeira, J. A.
Vicente, A. A.
Correia, J. H.
Minas, Graça
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Miranda, J. M.
Oliveira, Hugo Carneiro
Teixeira, J. A.
Vicente, A. A.
Correia, J. H.
Minas, Graça
dc.subject.por.fl_str_mv Alternate flow
Fluidic mixer
Passive mixing
Active mixing
Microfluidics
Science & Technology
topic Alternate flow
Fluidic mixer
Passive mixing
Active mixing
Microfluidics
Science & Technology
description Mixing in microsystems, combining alternate flow with obstacles, is studied by numerical methods. Simulations show that the layers of high and low solute concentrations, created by the alternate flow, are split into smaller chunks of fluid by obstacles inserted in the mixing channel, decreasing the critical mixing length. Reverse flow is necessary to guarantee symmetry and good mixing. Mixing increases with the increase of the number of obstacles. Increase of frequency improves mixing but requires an increase of reverse flow. The improvement in the mixing process shows that this method is very useful for designing mixers for lab-on-a-chip devices.
publishDate 2010
dc.date.none.fl_str_mv 2010-03
2010-03-01T00:00:00Z
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/1822/16823
url http://hdl.handle.net/1822/16823
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0735-1933
10.1016/j.icheatmasstransfer.2010.01.012
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.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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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