Longitudinal dispersion coefficient for mixing in open channel flows with submerged vegetation

2020 ◽  
Vol 145 ◽  
pp. 105721 ◽  
Author(s):  
Jaehyun Shin ◽  
Jin Yu Seo ◽  
Il Won Seo
Keyword(s):  
Open Channel ◽  
Dispersion Coefficient ◽  
Channel Flows ◽  
Longitudinal Dispersion ◽  
Submerged Vegetation ◽  
Longitudinal Dispersion Coefficient ◽  
Open Channel Flows

Mean velocity and longitudinal dispersion of heavy particles in turbulent open-channel flow

1974 ◽  
Vol 65 (1) ◽  
pp. 11-28 ◽  
Author(s):  
B. Mutlu Sumer
Keyword(s):  
Open Channel ◽  
Dispersion Coefficient ◽  
Heavy Particle ◽  
Longitudinal Dispersion ◽  
Main Body ◽  
Longitudinal Dispersion Coefficient ◽  
Fall Velocity ◽  
Mean Velocity ◽  
Cross Sectional ◽  
The Mean

This paper deals with the motion of a heavy particle in a turbulent flow in an open channel with a smooth bottom. For the case when the particle stays in suspension in the main body of the flow almost all the time, (a) the probability density function of the projection on a cross-sectional plane of the particle position at any instant, and (b) the mean velocity and longitudinal dispersion coefficient of particles are determined analytically by employing the Eulerian formulation and applying the Aris moment transformations. It is found that the mean particle velocity decreases and the longitudinal dispersion coefficient of particles increases with the fall velocity.

Sign in / Sign up

Export Citation Format

Share Document