Journal article

A coupled CFD-DEM model for simulating the rheology of particulate suspensions


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Publication Details

Author list: Smuts EM, Deglon DA, Meyer CJ

Publisher: Inderscience

Publication year: 2017

Journal: Progress in Computational Fluid Dynamics, An International Journal

Journal name: Progress in Computational Fluid Dynamics

Volume number: 17

Issue number: 5

Start page: 290

End page: 301

Total number of pages: 12

ISSN: 1468-4349

eISSN: 1741-5233

URL: https://api.elsevier.com/content/abstract/scopus_id/85029521720


Abstract

This paper describes the development of a numerical model used to study
the rheology of particulate suspensions. A combination of computational
fluid dynamics (CFD) and the discrete element method (DEM) was used to
model the fluid and particulate phases, respectively. Initially, CFD
models of different rheometer geometries were tested for both a
Newtonian and a non-Newtonian fluid. Once the single-phase model had
been validated, a coupled model combining CFD and DEM was created. This
coupled model is currently capable of modelling spherical particles in a
suspending liquid. DLVO forces were included to account for the surface
charge on particles. Different numerical parameters were evaluated for
their suitability for this problem. These parameters were used to test
the model's response to changes in solids volume concentration and
different particle surface charge. When compared to experimental data,
the model produced similar trends.


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Last updated on 2018-05-02 at 11:36