Distribution of Two-Dimensional Unsteady Sediment Concentration in an Open Channel Flow
23 Nov 2018-pp 83-90
TL;DR: In this article, an unsteady two-dimensional transport equation is considered to investigate the distribution of suspended sediment in an open channel turbulent flow, where the mechanism of hindered settling is also taken into account.
Abstract: An unsteady two-dimensional transport equation is considered to investigate the distribution of suspended sediment in an open channel turbulent flow, where the mechanism of hindered settling is also taken into account. Due to the consideration of concentration-dependent settling velocity on sediment transportation, the transport equation is a partial differential equation with a highly nonlinear term, which has been solved numerically by using the alternating direction implicit (ADI) finite-difference method. It is found that the sediment concentration increases along the vertical direction due to the inclusion of hindered settling effect.
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TL;DR: In this paper, the effect of concentration of suspended particles upon their rate of settlement was examined experimentally, and the experimental results obtained in the present work were compared with those predicted from this theory.
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TL;DR: In this article, the nonequilibrium transport of suspended sediment in an open channel is studied at an abrupt change from a nonerodible to an erodible bed, and the convective-diffusion equation is solved for the case of constant velocity distribution and parabolic eddy diffusion coefficient.
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