Suspension-driven gravity surges on horizontal surfaces

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dc.contributor.author Zgheib, N.
dc.contributor.author Bonometti, T.
dc.contributor.author Balachandar, S.
dc.date.accessioned 2019-11-18T07:54:14Z
dc.date.available 2019-11-18T07:54:14Z
dc.date.copyright 2017 en_US
dc.date.issued 2019-11-18
dc.identifier.issn 1879-0747 en_US
dc.identifier.uri http://hdl.handle.net/10725/11534
dc.description.abstract We present results from highly resolved direct numerical simulations of canonical (axisymmetric and planar) and non-canonical (rectangular) configurations of horizontal suspension-driven gravity surges. We show that the dynamics along the initial minor and major axis of a rectangular release are roughly similar to that of a planar and axisymmetric current, respectively. However, contrary to expectation, we observe under certain conditions the final extent of the deposit from finite releases to surpass that from an equivalent planar current. This is attributed to a converging flow of the particle-laden mixture toward the initial minor axis, a behaviour that was previously reported for scalar-driven currents on uniform slopes [31]. This flow is observed to be correlated with the travelling of a perturbation wave generated at the extremity of the longest side that reaches the front of the shortest side in a finite time. A semi-empirical explicit expression (based on established relations for planar and axisymmetric currents) is proposed to predict the extent of the deposit in the entire x-y plane. Finally, we observe that for the same initial volume of a suspension-driven gravity surge, a release of larger initial horizontal aspect-ratio is able to retain particles in suspension for longer periods of time. en_US
dc.language.iso en en_US
dc.title Suspension-driven gravity surges on horizontal surfaces en_US
dc.type Article en_US
dc.description.version Published en_US
dc.title.subtitle effect of the initial shape 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 & Fluids en_US
dc.journal.volume 158 en_US
dc.article.pages 84-95 en_US
dc.keywords Direct numerical simulations en_US
dc.keywords Geophysical flows en_US
dc.keywords Non-canonical en_US
dc.keywords Particle-laden en_US
dc.keywords Deposit en_US
dc.identifier.doi https://doi.org/10.1016/j.compfluid.2017.03.016 en_US
dc.identifier.ctation Zgheib, N., Bonometti, T., & Balachandar, S. (2017). Suspension-Driven gravity surges on horizontal surfaces: Effect of the initial shape. Computers & Fluids, 158, 84-95. 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/S0045793017300968#keys0001 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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