Author(s): Ruo-Qian Wang
Linked Author(s):
Keywords: Multiphase Flow; Four-way Coupling; Vortex Ring; CFD-DEM; Environmental dredging; CAD cell; Open water disposal
Abstract: This article uses four-way coupling Euler-Lagrangian Large-Eddy Simulations to resolve particle cloud dynamics. The fractioned Navier-Stokes equations are numerically solved for fluid phase motion, solid phase motion is addressed by Lagrangian tracking for every single particle, and total momentum is conserved by fluid-solid inter-phase coupling. We validate the code by comparing numerical results with experiments in terms of particle cloud settlement and growth. A good comparison is obtained showing the reliability of the present numerical schemes. The time and height of phase separations are defined and analyzed for a variety of initial release conditions. Empirical formulas are drawn to fit the results. At last, an example is given to show how tooptimize an open-water disposal project using the newly obtained principles.
Year: 2013