The motion of 2-D buoyant clouds formed by releasing fine particles into quiescentwaters with finite depth is numerically studied. In the numerical model , particle phase is modeled by the dispersion model and turbulence is calculated by the large eddy simulation. The governing equations, including the filtered 2-D Navier-Stokes equations and mass transport equation , are solved based on the operator-splitting algorithm and an implicit cubic spline interpolation scheme. The eddy viscosity is evaluated by the modified Smagorinsky model including the buoyancy term. Comparisons of main flow characteristics ,i ncluding shape, size, average buoyancy , moving speed and the amount of particles deposited on the bed ,b etween experimental and computational results show that the numerical model well predicts the motion of the buoyant clouds in the whole process, from the falling to spreading stage. The effects of silt-fence on the motion of particle clouds are also investigated through numerical experiments .
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.