CFD-DEM Modeling of Dense Sub-Aerial and Submerged Granular Collapses

Sub-aerial (dry) and submerged dense granular collapses are studied by means of a three-phase unresolved computational fluid dynamics-discrete element method (CFD-DEM) numerical model. Physical experiments are also performed to provide data for validation and further analysis. Validations show good...

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Autores principales:	Maryam Shademani, Bruno Blais, Ahmad Shakibaeinia
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	dense granular collapse sub-arial and submerged granular flow unresolved CFD-DEM morphodynamics volume fraction evolution Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/525be1f53f744638872d95dd5e6346d6
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id	oai:doaj.org-article:525be1f53f744638872d95dd5e6346d6
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spelling	oai:doaj.org-article:525be1f53f744638872d95dd5e6346d62021-11-11T19:53:06ZCFD-DEM Modeling of Dense Sub-Aerial and Submerged Granular Collapses10.3390/w132129692073-4441https://doaj.org/article/525be1f53f744638872d95dd5e6346d62021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4441/13/21/2969https://doaj.org/toc/2073-4441Sub-aerial (dry) and submerged dense granular collapses are studied by means of a three-phase unresolved computational fluid dynamics-discrete element method (CFD-DEM) numerical model. Physical experiments are also performed to provide data for validation and further analysis. Validations show good compatibility between the numerical and experimental results. Collapse mechanism as well as post-collapse morphological parameters, such as granular surface profile and runout distance, are analyzed. The spatiotemporal variation of solid volume fraction is also investigated. The effect granular column aspect ratio is studied and found to be a key factor in granular morphology for both submerged and dry conditions. The volume fraction analysis evolution shows an expansion and re-compaction trend, correlated with the granular movement.Maryam ShademaniBruno BlaisAhmad ShakibaeiniaMDPI AGarticledense granular collapsesub-arial and submerged granular flowunresolved CFD-DEMmorphodynamicsvolume fraction evolutionHydraulic engineeringTC1-978Water supply for domestic and industrial purposesTD201-500ENWater, Vol 13, Iss 2969, p 2969 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dense granular collapse sub-arial and submerged granular flow unresolved CFD-DEM morphodynamics volume fraction evolution Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500
spellingShingle	dense granular collapse sub-arial and submerged granular flow unresolved CFD-DEM morphodynamics volume fraction evolution Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Maryam Shademani Bruno Blais Ahmad Shakibaeinia CFD-DEM Modeling of Dense Sub-Aerial and Submerged Granular Collapses
description	Sub-aerial (dry) and submerged dense granular collapses are studied by means of a three-phase unresolved computational fluid dynamics-discrete element method (CFD-DEM) numerical model. Physical experiments are also performed to provide data for validation and further analysis. Validations show good compatibility between the numerical and experimental results. Collapse mechanism as well as post-collapse morphological parameters, such as granular surface profile and runout distance, are analyzed. The spatiotemporal variation of solid volume fraction is also investigated. The effect granular column aspect ratio is studied and found to be a key factor in granular morphology for both submerged and dry conditions. The volume fraction analysis evolution shows an expansion and re-compaction trend, correlated with the granular movement.
format	article
author	Maryam Shademani Bruno Blais Ahmad Shakibaeinia
author_facet	Maryam Shademani Bruno Blais Ahmad Shakibaeinia
author_sort	Maryam Shademani
title	CFD-DEM Modeling of Dense Sub-Aerial and Submerged Granular Collapses
title_short	CFD-DEM Modeling of Dense Sub-Aerial and Submerged Granular Collapses
title_full	CFD-DEM Modeling of Dense Sub-Aerial and Submerged Granular Collapses
title_fullStr	CFD-DEM Modeling of Dense Sub-Aerial and Submerged Granular Collapses
title_full_unstemmed	CFD-DEM Modeling of Dense Sub-Aerial and Submerged Granular Collapses
title_sort	cfd-dem modeling of dense sub-aerial and submerged granular collapses
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/525be1f53f744638872d95dd5e6346d6
work_keys_str_mv	AT maryamshademani cfddemmodelingofdensesubaerialandsubmergedgranularcollapses AT brunoblais cfddemmodelingofdensesubaerialandsubmergedgranularcollapses AT ahmadshakibaeinia cfddemmodelingofdensesubaerialandsubmergedgranularcollapses
_version_	1718431407761522688

CFD-DEM Modeling of Dense Sub-Aerial and Submerged Granular Collapses

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