Three-Dimensional Mathematical Model of Suspended-Sediment Transport
Publication: Journal of Hydraulic Engineering
Volume 126, Issue 8
Abstract
This paper presents the basic equations for a mathematical model of sediment-laden flow in a nonorthogonal curvilinear coordinate system. The equations were derived using a tensor analysis of two-phase flow and incorporate a natural variable-density turbulence model with nonequilibrium sediment transport. Correspondingly, a free-surface and the bottom sediment concentration are employed to provide the boundary conditions at the river surface and the riverbed. The finite analytic method is used to solve the equations of mass and momentum conservation and also the transport equation for suspended sediment. To demonstrate the method, the sediment deposition for the Three Gorges Project is considered. The mathematical model specifies the boundary conditions for the inlet and outlet using data from physical model experiments. The results for the mathematical model were tested against laboratory measurements from the physical model experiment. Good agreement and accuracy were obtained.
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Published In
Journal of Hydraulic Engineering
Volume 126 • Issue 8 • August 2000
Pages: 578 - 592
History
Received: Apr 1, 1997
Published online: Aug 1, 2000
Published in print: Aug 2000
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