A Study on the Influence of Submergence Ratio on the Transport of Suspended Sediment in a Partially Vegetated Channel Flow

Riparian or aquatic vegetation thrives with seasons. The understanding of canopies' Submergence-Ratio (SR = stem height/water depth) influence on suspended sediment transport is still limited. Thus, Large Eddy Simulations coupled the Discrete Phase Method are used to investigate particles' three-dimensional distribution in a partially vegetated straight channel. spanwise particles quantified by probability density function (PDF), showing non-uniformity time as PDF variance. We found that (a) SR rising, depletion effects exerted vegetation-side mixing layer improved along interface between and bare channel region. However, has little effect variance direction when fully developed. (b) During developing stage over-canopy layer, submerged higher gains stronger upwards (vertical) entrainment capability. case 60%) concentration than other cases developed vertical region over canopy. (c) suspension analyzed. Particles migrating from entrained into turbulent structures. Nevertheless, profile more uniform at same streamwise location. 40% 60% have channel's upper