Publication:
Axial dispersion in segmented gas-liquid flow: effects of alternating channel curvature

dc.contributor.coauthorN/A
dc.contributor.departmentDepartment of Mechanical Engineering
dc.contributor.kuauthorMuradoğlu, Metin
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.date.accessioned2024-11-09T23:44:39Z
dc.date.issued2010
dc.description.abstractThe effects of channel curvature on the axial dispersion in segmented gas-liquid flows are studied computationally in a two-dimensional setting using a finite-volume/front-tracking method. Passive tracer particles are used to visualize and quantify the axial dispersion. The molecular diffusion is modeled by random walk of tracer particles. It is found that there is significant axial dispersion in serpentine channels even in the absence of molecular diffusion. The lubricating thin liquid layer that persists on the wall of a straight channel is periodically broken in the serpentine channel leading to enhanced axial dispersion. It is also found that the axial dispersion is always larger in the serpentine channel than that in the straight channel but the effects of channel curvature are more pronounced at high Peclet numbers, i.e., Pe > 10(4). A model is proposed based on the difference between the liquid film thicknesses on the inner and outer side of the bend in the limit as Pe ->infinity. Good agreement is found between the computational results and the model when the liquid slug is well mixed by the chaotic advection.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.issue12
dc.description.openaccessNO
dc.description.sponsoredbyTubitakEuN/A
dc.description.sponsorshipScientific and Technical Research Council of Turkey (TUBITAK) [108M238]
dc.description.sponsorshipTurkish Academy of Sciences (TUBA-GEBIP) The author thanks Professor Howard A. Stone for helpful conversations. This work has been supported by the Scientific and Technical Research Council of Turkey (TUBITAK) with Grant No. 108M238 and Turkish Academy of Sciences (TUBA-GEBIP).
dc.description.volume22
dc.identifier.doi10.1063/1.3531742
dc.identifier.eissn1089-7666
dc.identifier.issn1070-6631
dc.identifier.scopus2-s2.0-79251585988
dc.identifier.urihttps://doi.org/10.1063/1.3531742
dc.identifier.urihttps://hdl.handle.net/20.500.14288/13694
dc.identifier.wos285770200016
dc.keywordsResidence time distribution
dc.keywordsFront-tracking method
dc.keywordsBubble-train flow
dc.keywordsTaylor flow
dc.keywordsMass-transfer
dc.keywordsMicrochannels
dc.keywordsComputations
dc.keywordsTransport
dc.keywordsMotion
dc.keywordsFluid
dc.language.isoeng
dc.publisherAip Publishing
dc.relation.ispartofPhysics of Fluids
dc.subjectMechanics
dc.subjectPhysics
dc.subjectFluids
dc.subjectPlasmas
dc.titleAxial dispersion in segmented gas-liquid flow: effects of alternating channel curvature
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorMuradoğlu, Metin
local.publication.orgunit1College of Engineering
local.publication.orgunit2Department of Mechanical Engineering
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relation.isParentOrgUnitOfPublication.latestForDiscovery8e756b23-2d4a-4ce8-b1b3-62c794a8c164

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