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TitleNumerical study of micromixing combining alternate flow and obstacles
Author(s)Miranda, J. M.
Oliveira, Hugo Carneiro
Teixeira, J. A.
Vicente, A. A.
Correia, J. H.
Minas, Graça
KeywordsAlternate flow
Fluidic mixer
Passive mixing
Active mixing
Issue dateMar-2010
PublisherPergamon-Elsevier Science Ltd
JournalInternational Communications in Heat and Mass Transfer
Abstract(s)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.
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series
DEI - Artigos em revistas internacionais

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