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dc.date.accessioned2018-09-12T09:13:12Z
dc.date.available2018-09-12T09:13:12Z
dc.date.created2017-10-11T15:08:10Z
dc.date.issued2017
dc.identifier.citationPalmer, Teresa Lynne Baardsen, Gustav Skartlien, Roar . Reduction of the effective shear viscosity in polymer solutions due to crossflow migration in microchannels: Effective viscosity models based on DPD simulations. Journal of Dispersion Science and Technology. 2017, 39(2), 190-206
dc.identifier.urihttp://hdl.handle.net/10852/64643
dc.description.abstractMolecular dynamics simulations (dissipative particle dynamics–DPD) were developed and used to quantify wall-normal migration of polymer chains in microchannel Poseuille flow. Crossflow migration due to viscous interaction with the walls results in lowered polymer concentration near the channel walls. A larger fraction of the total flow volume becomes depleted of polymer when the channel width h decreases into the submicron range, significantly reducing the effective viscosity. The effective viscosity was quantified in terms of channel width and Weissenberg number Wi, for 5% polymer volume fraction in water. Algebraic models for the depletion width δ(Wi, h) and effective viscosity μe(δ/h, Wi) were developed, based on the hydrodynamic theory of Ma and Graham and our simulation results. The depletion width model can be applied to longer polymer chains after a retuning of the polymer persistence length and the corresponding potential/thermal energy ratio.en_US
dc.languageEN
dc.titleReduction of the effective shear viscosity in polymer solutions due to crossflow migration in microchannels: Effective viscosity models based on DPD simulationsen_US
dc.typeJournal articleen_US
dc.creator.authorPalmer, Teresa Lynne
dc.creator.authorBaardsen, Gustav
dc.creator.authorSkartlien, Roar
cristin.unitcode185,15,12,59
cristin.unitnameTeoretisk kjemi
cristin.ispublishedtrue
cristin.fulltextpreprint
cristin.qualitycode1
dc.identifier.cristin1503853
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of Dispersion Science and Technology&rft.volume=39&rft.spage=190&rft.date=2017
dc.identifier.jtitleJournal of Dispersion Science and Technology
dc.identifier.volume39
dc.identifier.issue2
dc.identifier.startpage190
dc.identifier.endpage206
dc.identifier.doihttp://dx.doi.org/10.1080/01932691.2017.1306784
dc.identifier.urnURN:NBN:no-67180
dc.type.documentTidsskriftartikkelen_US
dc.source.issn0193-2691
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/64643/1/preprint_palmer2017.pdf
dc.type.versionSubmittedVersion


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