Show simple item record

Depositordc.contributorSun, J
Funderdc.contributor.otherEPSRC - Engineering and Physical Sciences Research Councilen_UK
Funderdc.contributor.otherNERC - Natural Environment Research Councilen_UK
Funderdc.contributor.otherLeverhulme Trusten_UK
Funderdc.contributor.otherNational Natural Science Foundation of Chinaen_UK
Funderdc.contributor.otherEuropean Commission / Maria Sklodowska-Curieen_UK
Data Creatordc.creatorNajuch, Tim
Data Creatordc.creatorSun, Jin
Date Accessioneddc.date.accessioned2019-05-21T16:05:53Z
Date Availabledc.date.available2019-05-21T16:05:53Z
Citationdc.identifier.citationNajuch, Tim; Sun, Jin. (2019). Data and figures for the publication "Analysis of two partially-saturated-cell methods for lattice Boltzmann simulation of granular suspension rheology", [dataset]. University of Edinburgh. https://doi.org/10.7488/ds/2553.en
Persistent Identifierdc.identifier.urihttp://hdl.handle.net/10283/3334
Persistent Identifierdc.identifier.urihttps://doi.org/10.7488/ds/2553
Dataset Description (abstract)dc.description.abstractData supporting the published paper "Analysis of two partially-saturated-cell methods for lattice Boltzmann simulation of granular suspension rheology" (authors: Tim Najuch and Jin Sun) in Computers and Fluids (May, 2019) https://doi.org/10.1016/j.compfluid.2019.05.004 ABSTRACT: The lattice Boltzmann method (LBM) has been widely used to simulate fluid–solid flows with various approaches to couple the two phases. We study the partially-saturated-cell (PSC) approach proposed by Nobel and Torcznski [A lattice-Boltzmann method for partially saturated computational cells. International Journal of Modern Physics, 9(8):1189–1201, 1998], which modifies the LB equation by an additional solid collision term weighted by the lattice solid fraction. We analyse two different PSC schemes with regard to its capability of accurately computating the hydrodynamic stresslet, which is essential to computing the stress, hence the rheology of suspensions of granular particles. Through simulations of single and pair particles in a simple shear flow field, we show that a commonly used solid collision term based on non-equilibrium bounce-back fails to correctly capture the stresslet, although can result in a numerically accurate hydrodynamic torque, when compared to the analytical solutions. In contrast, a model using superposition, which has neither hitherto been analysed nor extensively applied, is demonstrated to be able to accurately calculate both the stresslet and the torque. We finally highlight the importance of using the correct model when simulating suspension rheology, showing the viscosity obtained in simulations of hundreds of mono-disperse particles at various solid fractions sheared homogeneously using the Lees-Edwards boundary condition.en_UK
Languagedc.language.isoengen_UK
Publisherdc.publisherUniversity of Edinburghen_UK
Relation (Is Referenced By)dc.relation.isreferencedbyhttps://doi.org/10.1016/j.compfluid.2019.05.004en_UK
Rightsdc.rightsCreative Commons Attribution 4.0 International Public Licenseen
Subjectdc.subjectlattice Boltzmann methoden_UK
Subjectdc.subjectdiscrete element methoden_UK
Subjectdc.subjectsuspension rheologyen_UK
Subject Classificationdc.subject.classificationEngineering::Fluid Mechanicsen_UK
Titledc.titleData and figures for the publication "Analysis of two partially-saturated-cell methods for lattice Boltzmann simulation of granular suspension rheology"en_UK
Typedc.typedataseten_UK

Download All
zip file MD5 Checksum: 36aa7000483dbc4bee920b1652908847

Files in this item

Thumbnail
Thumbnail
Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record