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Diagonal Cartesian Method for the Numerical Simulation of Flow and Suspended Sediment Transport over Complex Boundaries
Publisher: American Society of Civil Engineers
Abstract: There is increasing demand for simulation tools of flow and suspended sediment transport over complex boundaries in hydraulic engineering. The diagonal Cartesian method, which approximates complex boundaries using both ...
Influence of Vertical Resolution and Nonequilibrium Model on Three-Dimensional Calculations of Flow and Sediment Transport
Publisher: American Society of Civil Engineers
Abstract: This note, using a three-dimensional model of river flow and sediment transport, examines the effect of the vertical resolution and the choice a nonequilibrium adaptation length
Response of Bedload and Bedforms to Near-Bed Flow Structures
Publisher: ASCE
Abstract: In this study, the large eddy simulation (LES) under the Eulerian method is used to solve the Navier-Stokes equations for turbulent flow simulation. The Lagrangian point-particle model is applied to track particle trajectories ...
Bedforms and Flow Resistance of Cohesive Beds with and without Biofilm Coating
Publisher: American Society of Civil Engineers
Impact of Particle Shape on Saltating Mode of Bedload Transport Sheared by Turbulent Flow
Publisher: ASCE
Abstract: The saltating mode of sediment transport is the dominant mechanism of bedload transport in a fluvial stream, especially in mountainous rivers. In most simulation studies, the actual shapes of sediment particles are simplified ...
New Instability Criterion for Stability Analysis of Homogeneous Slopes with Double Strength Reduction
Publisher: ASCE
Abstract: A new instability criterion based on the critical slope concept and the double strength reduction is proposed to evaluate the stability of slopes. In this method, the critical slope contour is determined by the slip-line ...
Influence of Bioroughness Density on Turbulence Characteristics in Open-Channel Flows
Publisher: American Society of Civil Engineers
Abstract: Bioroughness plays an important role in modifying the velocity and sediment flux near the riverbed. It is therefore pertinent to study the influence of benthic fauna on the bed forms. To this end, large-eddy simulations ...