Local lubrication model for spherical particles within incompressible Navier-Stokes flows

Physical Review. E
B LambertM Bergmann

Abstract

The lubrication forces are short-range hydrodynamic interactions essential to describe suspension of the particles. Usually, they are underestimated in direct numerical simulations of particle-laden flows. In this paper, we propose a lubrication model for a coupled volume penalization method and discrete element method solver that estimates the unresolved hydrodynamic forces and torques in an incompressible Navier-Stokes flow. Corrections are made locally on the surface of the interacting particles without any assumption on the global particle shape. The numerical model has been validated against experimental data and performs as well as existing numerical models that are limited to spherical particles.

References

Jan 1, 2008·Journal of Computational Physics·R MittalA von Loebbecke
Dec 15, 2015·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Pedro CostaWim-Paul Breugem

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