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dc.contributor.authorYu, M
dc.contributor.authorYu, X
dc.contributor.authorBalachandar, S
dc.contributor.authorManning, Andrew
dc.date.accessioned2022-08-25T09:42:28Z
dc.date.available2022-08-25T09:42:28Z
dc.date.issued2022-07-19
dc.identifier.issn2296-6463
dc.identifier.issn2296-6463
dc.identifier.other815652
dc.identifier.urihttp://hdl.handle.net/10026.1/19566
dc.description.abstract

<jats:p>Floc size distribution is one of the key parameters to characterize flocculating cohesive sediment. An Eulerian–Lagrangian framework has been implemented to study the flocculation dynamics of cohesive sediments in homogeneous isotropic turbulent flows. Fine cohesive sediment particles are modeled as the dispersed phase by the discrete element method, which tracks the motion of individual particles. An adhesive contact model with rolling friction is applied to simulate the particle–particle interactions. By varying the physicochemical properties (i.e., stickiness and stiffness) of the primary particles, the dependence of the mathematical form of the floc size distribution on sediment properties is investigated. At the equilibrium state, the aggregation and breakup processes reach a dynamic equilibrium, in which construction by aggregation is balanced with destruction by breakup, and construction by breakup is balanced with destruction by aggregation. When the primary particles are less sticky, floc size distribution fits better with the lognormal distribution. When the primary particles are very sticky, both the aggregation of smaller flocs and breakup from larger flocs play an equally important role in the construction of the intermediate-sized flocs, and the equilibrium floc size distribution can be better fitted by the Weibull distribution. When the Weibull distribution develops, a shape parameter around 2.5 has been observed, suggesting a statistically self-similar floc size distribution at the equilibrium state.</jats:p>

dc.format.extent815652-
dc.language.isoen
dc.publisherFrontiers Media
dc.subjectcohesive sediment
dc.subjectfloc size distribution
dc.subjecttwo phase approach
dc.subjectdiscrete element method (DEM)
dc.subjectdynamic equilibrium
dc.titleFloc Size Distributions of Cohesive Sediment in Homogeneous Isotropic Turbulence
dc.typejournal-article
dc.typeJournal Article
plymouth.author-urlhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000835076800001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008
plymouth.volume10
plymouth.publication-statusPublished online
plymouth.journalFrontiers in Earth Science
dc.identifier.doi10.3389/feart.2022.815652
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Biological and Marine Sciences
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA07 Earth Systems and Environmental Sciences
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Marine Institute
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dcterms.dateAccepted2022-06-21
dc.rights.embargodate2022-8-26
dc.identifier.eissn2296-6463
dc.rights.embargoperiodNot known
rioxxterms.funderDirectorate for Geosciences
rioxxterms.identifier.projectCollaborative Research: Understanding the physics of flocculation processes and cohesive sediment transport in bottom boundary layers through multi-scale modeling
rioxxterms.versionofrecord10.3389/feart.2022.815652
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.typeJournal Article/Review
plymouth.funderCollaborative Research: Understanding the physics of flocculation processes and cohesive sediment transport in bottom boundary layers through multi-scale modeling::Directorate for Geosciences


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