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Analysis of bedload transport in laminar flows.

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Analysis of bedload transport in laminar flows.

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dc.contributor.author Cheng, Nian-Sheng
dc.date.accessioned 2012-03-22T06:44:49Z
dc.date.available 2012-03-22T06:44:49Z
dc.date.copyright 2004
dc.date.issued 2012-03-22
dc.identifier.citation Cheng, N. S. (2004). Analysis of bedload transport in laminar flows. Advances in Water Resources, 27(9), 937-942.
dc.identifier.issn 0309-1708
dc.identifier.uri http://hdl.handle.net/10220/7660
dc.description.abstract Bedload transport generally depends on the bed shear stress and Reynolds number. Many studies conducted for the condition of turbulent flows have revealed the dependence of the transport rate on the bed shear stress, while knowledge of the Reynolds number effect on the transport rate is very limited. As an extreme case to reflect the viscous effect on sediment transport, sediment transport in laminar flows is considered in this paper. A stochastic approach is adopted to explore how the transport rate can be associated with characteristics of laminar flows. First, the probability of erosion in the absence of turbulence is assumed to depend only on the randomness of bed particles. The probability is then applied to formulate the sediment transport rate, of which the derivation is made largely based on Einstein's bedload theory. The theoretical result indicates that the dimensionless transport rate for laminar flows is dependent on the dimensionless shear stress and dimensionless particle diameter or the shear Reynolds number. Comparisons are finally made between the derived formula and an empirical correlation available in the literature.
dc.format.extent 4 p.
dc.language.iso en
dc.relation.ispartofseries Advances in water resources
dc.rights © 2004 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Advances in Water Resources, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1016/j.advwatres.2004.05.010].
dc.subject DRNTU::Engineering::Civil engineering::Water resources.
dc.title Analysis of bedload transport in laminar flows.
dc.type Journal Article
dc.contributor.school School of Civil and Environmental Engineering
dc.identifier.doi http://dx.doi.org/10.1016/j.advwatres.2004.05.010

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