A two-dimensional (2-D) depth-integrated suspended sediment transport model under waves and currents in the generalized curvilinear coordinates is developed to study the movement of sediment in the Yangtze Estuary. The complicated coastal shapes can be perfectly adapted through using non-orthogonal self-adaptive grids with high resolution. The method of shear stress is adopted to determine the source function in the suspended sediment diffusion equation. The local coefficient is introduced into the critical erosion shear stress. The effects of salinity, suspended sediment concentration (SSC) and velocity are considered in the sediment settling velocity formulation. The verifications of SSC processes show that the calculated results are consistent with the observed results. The results indicate that this model can preferably reflect suspended sediment fields in the Yangtze Estuary.
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