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

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...

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Bibliographic Details
Published in:Computational particle mechanics 2014-05, Vol.1 (1), p.3-13
Main Authors: Leonardi, Alessandro, Wittel, Falk K., Mendoza, Miller, Herrmann, Hans J.
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Computational Science and Engineering
Engineering
Theoretical and Applied Mechanics
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Summary: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.
ISSN:2196-4378
2196-4386
DOI:10.1007/s40571-014-0001-z