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Simulation of oblate particle suspensions in shearing flow

Coupled lattice Boltzmann and discrete element methods were employed to investigate the rheological properties of oblate spheroid suspensions in a Newtonian fluid.  The volume fraction of the particles is varied, along with the particle aspect ratio. As the particle shape is varied from sphere to oblate, we observe an increase of the relative viscosity, as well as an increase of the particle contacts and the contact distance.  The more oblate particles in denser suspensions are observed to reorient systematically subject to the shear flow.

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Data and Simulation: Junwei Guo

Visualisation: Junwei Guo