Direct numerical simulation of cylindrical particle-laden gravity currents

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dc.contributor.author Zgheib, N.
dc.contributor.author Bonometti, T.
dc.contributor.author Balachandar, S.
dc.date.accessioned 2019-11-18T11:30:48Z
dc.date.available 2019-11-18T11:30:48Z
dc.date.copyright 2015 en_US
dc.identifier.issn 1879-0747 en_US
dc.identifier.uri http://hdl.handle.net/10725/11539
dc.description.abstract We present results from direct numerical simulations (DNS) of cylindrical particle-laden gravity currents. We consider the case of a full depth release with monodisperse particles at a dilute concentration where particle–particle interactions may be neglected. The disperse phase is treated as a continuum and a two-fluid formulation is adopted. We present results from two simulations at Reynolds numbers of 3450 and 10,000. Our results are in good agreement with previously reported experiments and theoretical models. At early times in the simulations, we observe a set of rolled up vortices that advance at varying speeds. These Kelvin–Helmholtz (K–H) vortex tubes are generated at the surface and exhibit a counter-clockwise rotation. In addition to the K–H vortices, another set of clockwise rotating vortex tubes initiate at the bottom surface and play a major role in the near wall dynamics. These vortex structures have a strong influence on wall shear-stress and deposition pattern. Their relations are explored as well. en_US
dc.language.iso en en_US
dc.title Direct numerical simulation of cylindrical particle-laden gravity currents en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 201706684 en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal Computers & Fluid en_US
dc.journal.volume 123 en_US
dc.article.pages 23-31 en_US
dc.keywords Direct numerical simulations en_US
dc.keywords Turbidity currents en_US
dc.keywords Particle-laden flow en_US
dc.identifier.doi https://doi.org/10.1016/j.compfluid.2015.09.001 en_US
dc.identifier.ctation Zgheib, N., Bonometti, T., & Balachandar, S. (2015). Direct numerical simulation of cylindrical particle-laden gravity currents. Computers & Fluids, 123, 23-31. en_US
dc.author.email nadim.zgheib@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url https://www.sciencedirect.com/science/article/pii/S0045793015003072 en_US
dc.orcid.id https://orcid.org/0000-0002-1032-8005 en_US
dc.author.affiliation Lebanese American University en_US

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