Coupled DEM-LBM method for the free-surface simulation of heterogeneous suspensions

Abstract

The complexity of the interactions between the constituent granular and liquid phases of a suspension requires an adequate treatment of the constituents themselves. A promising way for numerical simulations of such systems is given by hybrid computational frameworks. This is naturally done, when the Lagrangian description of particle dynamics of the granular phase finds a correspondence in the fluid description. In this work we employ extensions of the Lattice-Boltzmann Method for non-Newtonian rheology, free surfaces, and moving boundaries. The models allows for a full coupling of the phases, but in a simplified way. An experimental validation is given by an example of gravity driven flow of a particle suspension.

Granular-front formation in free-surface flow of concentrated suspensions

“…[34]. The coupling between these two solvers has been the object of much recent research [35] and has nowadays achieved a high level of maturity, with the possibility to simulate real systems also with non-Newtonian fluids [36].…”

Lattice-Boltzmann Method for Geophysical Plastic Flows

“…• A convenient environment for the coupling with a discrete method. This option opens future chances for full realizations of multiphase flows [13].…”

On the thermal response of a surface deposited laser-irradiated powder particle

“…We refer the reader to Duran [28], Pö schel and Schwager [29], Onate et al [30][31][32], Rojek et al [33,34], Carbonell et al [35], Labra and Onate [36], Leonardi et al [37], Cante et al [38], Bolintineanu et al [39], Avci and Wriggers [40] and Zohdi [41][42][43][44][45][46][47][48][49][50][51] for more computationallyoriented techniques aligned with manufacturing processes involving particles.…”