| Summary: | A numerical study of particle motion in a cubic lid driven cavity is presented. As a computational
tool, a boundary element based flow solver with a Lagrangian particle tracking algorithm is derived.
Flow simulations were performed using an in-house boundary element based 3D viscous flow solver.
The Lagrangian particle tracking algorithm is capable of simulation of dilute suspensions of particles
in viscous flows taking into account gravity, buoyancy, drag, pressure gradient and added mass. The
derived algorithm is used to simulate particle behaviour in a cellular flow field and in a lid driven
cavity flow. Simulations of particle movement in a cellular flow field were used to validate the
algorithm. The main goal of the paper was to numerically simulate the flow behaviour of spheres of
different densities and different diameters, as experimentally observed in work of Tsorng et al.The
study of slightly buoyant and non-buoyant particles in a lid driven cavity was aimed at discovering
cases when particles leave the primary vortex and enter into secondary vortices, a phenomenon
described in the work of Tsorng et al. A parametric study of this phenomenon was preformed.
The presented computational results show excellent agreement with experiments, confirming the
accuracy of the developed computational method.
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