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A depth-averaged two-dimensional (2-D) numerical model was developed in the present paper, with the goal of simulating suspended sediment transport. In the model, the advection-diffusion equation of the suspended sediment was solved using the Discontinuous Galerkin (DG) method based on unstructured meshes. According to the suspended sediment characteristics of Lianyungang port, the model was applied...
Taking the second stage of breakwater project at Zhangjiabu port as background, a 2-D numerical model based on irregular triangular mesh is used to simulate the tidal current field, the transport of suspended sediment, the change of scouring and silting, as well as the siltation of channel in the project area and nearby. The research results show that: (1) the project area has the feature of semi-diurnal...
A three-dimensional numerical model has been developed in the present paper with an aim to simulate suspended sediment transport under waves and currents. The modelling system consists of two coupled model components: (i) the NS equations for the hydrodynamic model, including wave effects, (ii) the advection-diffusion equation for the suspended sediment transport model. In this work, the derivation,...
Based on analysis on the existing equations for the sedimentation rate of fine sediment, this study proposes a method to calculate the sedimentation rate of fine suspended sediment in radial sand ridge sea area by taking advantage of the hydrographical measuring data, so as to verify the applicability of Burt median sedimentation rate equation in this sea area. On this basis, an empirical equation...
In order to further study the vertical velocity profile with suspended sediment in an open channel, a series of experiments were conducted in a flume. The time average velocity data were calculated by the measured time average velocity data, and compared with the results obtained from a dip modified log law for the vertical profile of the open channel flow. The results indicate that the time-averaged...
Using a Lagrangian framework, we obtain predictions for suspended sediment transport under a swash event described by a recently proposed shallow-water model in which the swash is driven by a sustained off-shore bore and the sediment supply from the bore may vary with time. Although the hydrodynamics of the ‘modified’ swash flows differ somewhat from the classic Shen–Meyer description, the overall...
The main purpose of this paper is to predict stream-way transition with adaptive-network-based fuzzy inference system (ANFIS). Therefore, the downstream stream-way transition according to the upstream conditions is forecasted by ANFIS. Five main factors may affect the stream-way transition include inflow position, inflow angle, slope, flow discharge, and sand content of suspended sediment. We selected...
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