Turbulence and Bifurcation in the Motion of an Hydrocyclone

Details Turbulence and Bifurcation in the Motion of an Hydrocyclone Turbulence and Bifurcation in the Motion of an Hydrocyclone

1998-03-25

arxiv.org/abs/chao-dyn/9803036v1

Nonlinear Sciences

Chaotic Dynamics

15 pages, Latex, 6 postscript figures, presented to the IV IACM World Congress on Computational Mechanics, Argentina, 1998

Scientific paper

The hydrocyclone is a tool used in different fields but mostly in mining industries to separate minerals. The minerals are put in a liquid or in a stable suspension of a chosen density which must be less than the density of the heavier minerals and greater than that of the lighter minerals. Because of the effect of the walls the flow in a hydrocyclone is the result of a movement of confined swirling (vortex) and recirculating flow, which are generated by the difference of the means. We study turbulence and bifurcation in the motion of the Hydrocyclone by using the Navier-Stokes for the conservation of the mass and of the momentum. These equations are numerically solved with the finite element method (FEM) and the $k-\epsilon$ model. Our FEM results are in quite good agreement with the experimental data. Finally, we introduce a simple 3D family of maps which models very well the behaviour of the trajectories of the light and heavy particles in the Hydrocyclone.

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