A FEM-DEM technique for studying the motion of particles in non-Newtonian fluids: application to the transport of drill cuttings in wellbores
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We present a procedure for coupling the finite element method (FEM) and the discrete element method (DEM) for analysis of the motion of particles in non-Newtonian fluids. Particles are assumed to be spherical and immersed in the fluid mesh. A new method for computing the drag force on the particles in a non-Newtonian fluid is presented. A drag force correction for non-spherical particles is proposed. The FEM-DEM coupling procedure is explained for Eulerian and Lagrangian flows, and the basic expressions of the discretized solution algorithm are given. The usefulness of the FEM-DEM technique is demonstrated in its application to the transport of drill cuttings in wellbores.
CitationCeligueta, M.A., Deshpande, K.M., Latorre, S., Oñate, E. A FEM-DEM technique for studying the motion of particles in non-Newtonian fluids: application to the transport of drill cuttings in wellbores. "Computational particle mechanics", Novembre 2015, vol. 3, núm. 2, p. 263-276.