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Article: Numerical modelling of hydro-morphological processes dominated by fine suspended sediment in a stormwater pond

TitleNumerical modelling of hydro-morphological processes dominated by fine suspended sediment in a stormwater pond
Authors
KeywordsStormwater pond
Suspended load
Shallow water equations
Morphological changes
Issue Date2018
Citation
Journal of Hydrology, 2018, v. 556, p. 87-99 How to Cite?
Abstract© 2017 The Author(s) Fine sediment plays crucial and multiple roles in the hydrological, ecological and geomorphological functioning of river systems. This study employs a two-dimensional (2D) numerical model to track the hydro-morphological processes dominated by fine suspended sediment, including the prediction of sediment concentration in flow bodies, and erosion and deposition caused by sediment transport. The model is governed by 2D full shallow water equations with which an advection–diffusion equation for fine sediment is coupled. Bed erosion and sedimentation are updated by a bed deformation model based on local sediment entrainment and settling flux in flow bodies. The model is initially validated with the three laboratory-scale experimental events where suspended load plays a dominant role. Satisfactory simulation results confirm the model's capability in capturing hydro-morphodynamic processes dominated by fine suspended sediment at laboratory-scale. Applications to sedimentation in a stormwater pond are conducted to develop the process-based understanding of fine sediment dynamics over a variety of flow conditions. Urban flows with 5-year, 30-year and 100-year return period and the extreme flood event in 2012 are simulated. The modelled results deliver a step change in understanding fine sediment dynamics in stormwater ponds. The model is capable of quantitatively simulating and qualitatively assessing the performance of a stormwater pond in managing urban water quantity and quality.
Persistent Identifierhttp://hdl.handle.net/10722/264863
ISSN
2023 Impact Factor: 5.9
2023 SCImago Journal Rankings: 1.764
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorGuan, Mingfu-
dc.contributor.authorAhilan, Sangaralingam-
dc.contributor.authorYu, Dapeng-
dc.contributor.authorPeng, Yong-
dc.contributor.authorWright, Nigel-
dc.date.accessioned2018-11-08T01:35:07Z-
dc.date.available2018-11-08T01:35:07Z-
dc.date.issued2018-
dc.identifier.citationJournal of Hydrology, 2018, v. 556, p. 87-99-
dc.identifier.issn0022-1694-
dc.identifier.urihttp://hdl.handle.net/10722/264863-
dc.description.abstract© 2017 The Author(s) Fine sediment plays crucial and multiple roles in the hydrological, ecological and geomorphological functioning of river systems. This study employs a two-dimensional (2D) numerical model to track the hydro-morphological processes dominated by fine suspended sediment, including the prediction of sediment concentration in flow bodies, and erosion and deposition caused by sediment transport. The model is governed by 2D full shallow water equations with which an advection–diffusion equation for fine sediment is coupled. Bed erosion and sedimentation are updated by a bed deformation model based on local sediment entrainment and settling flux in flow bodies. The model is initially validated with the three laboratory-scale experimental events where suspended load plays a dominant role. Satisfactory simulation results confirm the model's capability in capturing hydro-morphodynamic processes dominated by fine suspended sediment at laboratory-scale. Applications to sedimentation in a stormwater pond are conducted to develop the process-based understanding of fine sediment dynamics over a variety of flow conditions. Urban flows with 5-year, 30-year and 100-year return period and the extreme flood event in 2012 are simulated. The modelled results deliver a step change in understanding fine sediment dynamics in stormwater ponds. The model is capable of quantitatively simulating and qualitatively assessing the performance of a stormwater pond in managing urban water quantity and quality.-
dc.languageeng-
dc.relation.ispartofJournal of Hydrology-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectStormwater pond-
dc.subjectSuspended load-
dc.subjectShallow water equations-
dc.subjectMorphological changes-
dc.titleNumerical modelling of hydro-morphological processes dominated by fine suspended sediment in a stormwater pond-
dc.typeArticle-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1016/j.jhydrol.2017.11.006-
dc.identifier.scopuseid_2-s2.0-85034117855-
dc.identifier.volume556-
dc.identifier.spage87-
dc.identifier.epage99-
dc.identifier.isiWOS:000423641300008-
dc.identifier.issnl0022-1694-

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