Attractors for the motion of a finite-size particle in a cuboidal lid-driven cavity

The motion of a finite-size particle in the cuboidal lid-driven cavity flow is investigated experimentally for Reynolds numbers $100$ and $200$ which steady. These steady three-dimensional flows exhibit chaotic regular streamlines, where latter are confined to Kolmogorov–Arnold–Moser (KAM) tori. interaction between moving wall creates global attractors. For neutrally buoyant particles, these attractors periodic or quasi-periodic, strongly attracting located near KAM tori flow. As density mismatch fluid increases, buoyancy inertia become important, evolve from those changing their shape, position attraction rates.