Sediment transport formulae for compound channel flows

XV Bi-power law correlations for sediment transport in pressure driven channel flows

Direct numerical simulation (DNS) can be used to extract information implicit in the equations of fluid-particle motion. We have investigated the lift-off of a single particle and many particles in pressure driven flows by 2D DNS (N.A. Patankar, Huang, Ko & Joseph 2001a, Ko, N.A. Patankar & Joseph 2001, Joseph, & Ocando 2001, Choi & Joseph 2001, N.A. Patankar, Ko, Choi & Joseph 2001b). We show ...

Title: Flow-vegetation-sediment interaction in a cohesive compound channel

3 The purpose of this study was to quantify how vegetation influences the flow and sediment processes 4 relevant for the design and management of environmental compound channels. Therefore, we conducted a 5 two-year field investigation in a cohesive two-stage channel, focusing on the flow resistance and net 6 deposition in five sub-reaches with different floodplain vegetation conditions. In the...

Analysis of Velocity Lag in Sediment-laden Open Channel Flows

Laboratory experiments have recently confirmed that the streamwise particle velocity is largely less than that of the fluid in sediment-laden flows. This velocity lag is investigated analytically in the present study based on the drag force exerting on a particle in the presence of other neighbors. The normalized drag force or the hindrance coefficient is found generally dependent on the partic...

Direct Numerical Simulation of Sediment Transport in a Horizontal Channel

Electrical Resistance Tomography for Suspended Sediment Measurements in Open Channel Flows Using a Novel Sensor Design

Electrical Resistance tomography (ERT) has been previously employed to measure sediment concentrations in liquids (Bolton et al. [1], James et al. [2], Qiu et al. [3]), and linear sensors were the first type of sensor employed in previous tomographic applications (Qiu et al. [4]). However, ERT has mostly been used in cylindrical vessels or pipes with a circular sensor around the area of interes...