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- Publisher Website: 10.1051/epjconf/201714009037
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Conference Paper: The role of fluid viscosity in an immersed granular collapse
Title | The role of fluid viscosity in an immersed granular collapse |
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Authors | |
Issue Date | 2017 |
Publisher | EDP Sciences. The Journal's web site is located at http://www.epj-conferences.org |
Citation | Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media, Montpellier, France, 3-7 July 2017. In EPJ Web of Conferences, 2017, v. 140, article no. 09037 How to Cite? |
Abstract | Instabilities of immersed slopes and cliffs can lead to catastrophic events that involve a sudden release of huge soil mass. The scaled deposit height and runout distance are found to follow simple power laws when a granular column collapses on a horizontal plane. However, if the granular column is submerged in a fluid, the mobility of the granular collapse due to high inertia effects will be reduced by fluid-particle interactions. In this study, the effects of fluid viscosity on granular collapse is investigated qualitatively by adopting a numerical approach based on the coupled lattice Boltzmann method (LBM) and discrete element method (DEM). It is found that the granular collapse can be dramatically slowed down due to the presence of viscous fluids. For the considered granular configuration, when the fluid viscosity increases. the runout distance decreases and the final deposition shows a larger deposit angle. |
Description | Poster presentation |
Persistent Identifier | http://hdl.handle.net/10722/265202 |
ISSN | 2019 SCImago Journal Rankings: 0.184 |
DC Field | Value | Language |
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dc.contributor.author | Yang, G | - |
dc.contributor.author | Kwok, CY | - |
dc.contributor.author | Sobral, YD | - |
dc.date.accessioned | 2018-11-20T02:02:05Z | - |
dc.date.available | 2018-11-20T02:02:05Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Powders and Grains 2017 – 8th International Conference on Micromechanics on Granular Media, Montpellier, France, 3-7 July 2017. In EPJ Web of Conferences, 2017, v. 140, article no. 09037 | - |
dc.identifier.issn | 2100-014X | - |
dc.identifier.uri | http://hdl.handle.net/10722/265202 | - |
dc.description | Poster presentation | - |
dc.description.abstract | Instabilities of immersed slopes and cliffs can lead to catastrophic events that involve a sudden release of huge soil mass. The scaled deposit height and runout distance are found to follow simple power laws when a granular column collapses on a horizontal plane. However, if the granular column is submerged in a fluid, the mobility of the granular collapse due to high inertia effects will be reduced by fluid-particle interactions. In this study, the effects of fluid viscosity on granular collapse is investigated qualitatively by adopting a numerical approach based on the coupled lattice Boltzmann method (LBM) and discrete element method (DEM). It is found that the granular collapse can be dramatically slowed down due to the presence of viscous fluids. For the considered granular configuration, when the fluid viscosity increases. the runout distance decreases and the final deposition shows a larger deposit angle. | - |
dc.language | eng | - |
dc.publisher | EDP Sciences. The Journal's web site is located at http://www.epj-conferences.org | - |
dc.relation.ispartof | EPJ Web of Conferences | - |
dc.relation.ispartof | 8th International Conference on Micromechanics on Granular Media (Powders and Grains 2017), Montpellier, France | - |
dc.rights | Reproduced with permission from Astronomy & Astrophysics, © ESO | - |
dc.title | The role of fluid viscosity in an immersed granular collapse | - |
dc.type | Conference_Paper | - |
dc.identifier.email | Kwok, CY: fkwok8@hku.hk | - |
dc.identifier.authority | Kwok, CY=rp01344 | - |
dc.description.nature | link_to_OA_fulltext | - |
dc.identifier.doi | 10.1051/epjconf/201714009037 | - |
dc.identifier.scopus | eid_2-s2.0-85024110876 | - |
dc.identifier.hkuros | 296010 | - |
dc.identifier.volume | 140 | - |
dc.publisher.place | France | - |
dc.identifier.issnl | 2100-014X | - |