Publication:
Polymer drag reduction in surfactant-contaminated turbulent bubbly channel flows

dc.contributor.coauthorIzbassarov, Daulet
dc.contributor.coauthorAhmed, Zaheer
dc.contributor.coauthorCosta, Pedro
dc.contributor.coauthorVuorinen, Ville
dc.contributor.coauthorTammisola, Outi
dc.contributor.departmentDepartment of Mechanical Engineering
dc.contributor.kuauthorMuradoğlu, Metin
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.date.accessioned2024-11-09T13:10:23Z
dc.date.issued2021
dc.description.abstractPolymer additives are commonly utilized to manipulate bubbly flows in various applications. Here we investigate the effects of clean and contaminated bubbles driven upward (upflow) in Newtonian and viscoelastic turbulent channel flows. Interface-resolved direct numerical simulations are performed to examine sole and combined effects of soluble surfactant and viscoelasticity using an efficient three-dimensional finite-difference-front-tracking method. The incompressible flow equations are solved fully coupled with the FENE-P viscoelastic model and the equations governing interfacial and bulk surfactant concentrations. The latter coupling is accomplished by a nonlinear equation of state that relates the surface tension to the surfactant concentration. For Newtonian turbulent bubbly flows, the effects of Triton X-100 and 1-pentanol surfactant are examined. It is observed that the sorption kinetics highly affect the dynamics of bubbly flow. A minute amount of Triton X-100 is found to be sufficient to prevent the formation of bubble clusters restoring the single-phase behavior while even two orders of magnitude more 1-pentanol surfactant is not adequate to prevent the formation of layers. For viscoelastic turbulent flows, it is found that the viscoelasticity promotes formation of the bubble wall-layers and thus the polymer drag reduction is completely lost for the surfactant-free bubbly flows, while the addition of small amount of surfactant (Triton X-100) in this system restores the polymer drag reduction resulting in 25% drag reduction for the Wi = 4 case.
dc.description.fulltextYES
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.issue10
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuEU - TÜBİTAK
dc.description.sponsorshipSwedish Research Council
dc.description.sponsorshipEuropean Union (EU)
dc.description.sponsorshipHorizon 2020
dc.description.sponsorshipEuropean Research Council (ERC)
dc.description.sponsorshipStarting Grant
dc.description.sponsorshipResearch and Innovation Programme
dc.description.sponsorshipMUCUS
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TÜBİTAK)
dc.description.sponsorshipUniversity of Iceland Recruitment Fund Grant
dc.description.sponsorshipTURBBLY
dc.description.sponsorshipAalto Science Foundation (ASCI
dc.description.sponsorshipPENGUIN Project
dc.description.versionPublisher version
dc.description.volume6
dc.identifier.doi10.1103/PhysRevFluids.6.104302
dc.identifier.eissn1476-9360
dc.identifier.embargoNO
dc.identifier.filenameinventorynoIR03316
dc.identifier.issn2469-990X
dc.identifier.quartileN/A
dc.identifier.scopus2-s2.0-85117185929
dc.identifier.urihttps://hdl.handle.net/20.500.14288/2808
dc.identifier.wos704799500004
dc.keywordsBubbles
dc.keywordsLiquid
dc.keywordsMass transfer
dc.language.isoeng
dc.publisherAmerican Physiological Society (APS)
dc.relation.grantnoVR2014- 4809
dc.relation.grantno852529
dc.relation.grantno115M688
dc.relation.grantno1515- 151341
dc.relation.ispartofPhysical Review Fluids
dc.relation.urihttp://cdm21054.contentdm.oclc.org/cdm/ref/collection/IR/id/10097
dc.subjectPhysics
dc.subjectFluids and plasmas
dc.titlePolymer drag reduction in surfactant-contaminated turbulent bubbly channel flows
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.isOrgUnitOfPublication.latestForDiscoveryba2836f3-206d-4724-918c-f598f0086a36
relation.isParentOrgUnitOfPublication8e756b23-2d4a-4ce8-b1b3-62c794a8c164
relation.isParentOrgUnitOfPublication.latestForDiscovery8e756b23-2d4a-4ce8-b1b3-62c794a8c164

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