Physical and Numerical Modeling of the Entrainment by a High-Concentration Mud Suspension

Abstract

This paper presents the results of a physical and numerical model study on the entrainment by a high-concentration, cohesive sediment suspension. This turbulent, near-bed suspension is referred to as a concentrated benthic suspension (CBS). In the current configuration, the CBS entrains low-concentrated overlying water. The results of the physical and numerical experiments are in line with the results of similar experiments, published in literature, in which, in contrast, the upper, turbulent layer entrains water and sediment from the lower layer. The entrainment rate for these experiments is almost inversely proportional to the bulk Richardson-number