Particle–turbulence interaction and local particle concentration in sediment-laden open-channel flows

K Noguchi, I Nezu - Journal of Hydro-environment Research, 2009 - Elsevier
The present study describes an experimental investigation on the effects of ejection and
sweep motions to the local sediment concentration and turbulence modulation in suspended …

Turbulence characteristics and interaction between particles and fluid in particle-laden open channel flows

I Nezu, R Azuma - Journal of Hydraulic Engineering, 2004 - ascelibrary.org
Mechanism of sediment transport is composed of complicated interactions between
turbulent flow, particle motion, and bed configurations. Of particular significance is the …

Role of suspended‐sediment particle size in modifying velocity profiles in open channel flows

Z Cao, S Egashira, PA Carling - Water resources research, 2003 - Wiley Online Library
Previous experimental and analytical studies have revealed that suspended particles can
attenuate or enhance turbulence, depending on the particle size in relation to turbulence …

Velocity profiles for particles and liquid in open-channel flow with suspended sediment

M Muste, VC Patel - Journal of hydraulic engineering, 1997 - ascelibrary.org
Experiments were performed to measure the mean velocity and turbulence characteristics in
open-channel flows with and without suspended sediment (alluvial sand of nearly uniform …

Two‐phase versus mixed‐flow perspective on suspended sediment transport in turbulent channel flows

M Muste, K Yu, I Fujita, R Ettema - Water resources research, 2005 - Wiley Online Library
The present paper reports results obtained with image velocimetry to provide new insights
into the two‐phase nature of sediment‐laden flows. The resulting two‐phase flow …

Velocity profile of turbulent sediment-laden flows in open-channels

D Zhong, L Zhang, B Wu, Y Wang - International Journal of Sediment …, 2015 - Elsevier
In this paper, a study was carried out on the velocity profile of sediment-laden flows in open
channels using a two-phase mixture model for two-phase flows. The governing equations for …

Influence of coherent flow structures on the dynamics of suspended sediment transport in open-channel flow

M Cellino, U Lemmin - Journal of Hydraulic Engineering, 2004 - ascelibrary.org
The influence of suspended sediments on coherent flow structures has been studied by
simultaneously measuring the longitudinal and vertical components of the instantaneous …

Effect of particle concentration on sediment and turbulent diffusion coefficients in open-channel turbulent flow

D Pal, K Ghoshal - Environmental Earth Sciences, 2016 - Springer
To achieve a complete knowledge about the effect of particle concentration on sediment and
turbulent diffusion coefficients in open-channel turbulent flow is a long-standing problem for …

Modeling suspended sediment transport under influence of turbulence ejection and sweep events

CW Tsai, SH Huang - Water resources research, 2019 - Wiley Online Library
In conventional analysis of sedimentation in open channel flow, suspended sediment
transport is regarded as an advection diffusion process. A series of theories based on …

Analysis of velocity lag in sediment-laden open channel flows

NS Cheng - Journal of hydraulic engineering, 2004 - ascelibrary.org
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 …