Settling dynamics of Brownian chains in viscous fluids

dc.citation.articleNumber034303en_US
dc.citation.issueNumber3en_US
dc.citation.journalTitlePhysical Review Fluidsen_US
dc.citation.volumeNumber7en_US
dc.contributor.authorCunha, Lucas H.P.en_US
dc.contributor.authorZhao, Jingjingen_US
dc.contributor.authorMacKintosh, Fred C.en_US
dc.contributor.authorBiswal, Sibani Lisaen_US
dc.contributor.orgCenter for Theoretical Biological Physicsen_US
dc.date.accessioned2022-04-28T14:28:52Zen_US
dc.date.available2022-04-28T14:28:52Zen_US
dc.date.issued2022en_US
dc.description.abstractWe investigate the dynamics of sedimenting Brownian filaments using experimental, computational, and theoretical approaches. The filaments under consideration are composed of linked colloidal particles that form bead-spring-like chains. Under the action of gravitational forces, the nonlocal hydrodynamic interactions cause the filaments to bend and rotate to get their end-to-end direction perpendicular to gravity. Different reorientation mechanisms are verified for different regimes of flexibility, characterized by the elastogravitational number. The thermal forces promote shape and orientation fluctuations around the steady configurations of the reciprocal non-Brownian chains. The competition between the reorientation mechanisms and the Brownian effects results in normal distributions of the orientation of the chains. In the stiff regime, these fluctuations cause the chains to fall faster than their reciprocal non-Brownian cases. With increasing flexibility, thermal fluctuations lead to more compact configurations of the chains and higher average settling velocity. Nonetheless, chain flexibility plays an important role on lateral migration. The interplay between elastic, gravitational, and thermal forces leads to important secondary influences on the filament settling dynamics.en_US
dc.identifier.citationCunha, Lucas H.P., Zhao, Jingjing, MacKintosh, Fred C., et al.. "Settling dynamics of Brownian chains in viscous fluids." <i>Physical Review Fluids,</i> 7, no. 3 (2022) American Physical Society: https://doi.org/10.1103/PhysRevFluids.7.034303.en_US
dc.identifier.digitalPhysRevFluids-7-034303en_US
dc.identifier.doihttps://doi.org/10.1103/PhysRevFluids.7.034303en_US
dc.identifier.urihttps://hdl.handle.net/1911/112170en_US
dc.language.isoengen_US
dc.publisherAmerican Physical Societyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleSettling dynamics of Brownian chains in viscous fluidsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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