Simulations of dispersed turbulent multiphase flow
- 15 February 1997
- journal article
- Published by IOP Publishing in Fluid Dynamics Research
- Vol. 20 (1-6) , 143-156
- https://doi.org/10.1016/s0169-5983(96)00042-1
Abstract
Direct numerical simulations of homogeneous isotropic turbulence are used to investigate the effects of turbulence on the transport of particles in gas flows or bubbles in liquid flows. The inertia associated with the bubbles or the particles leads to locally strong concentrations of these in regions of instantaneously strong vorticity for bubbles or strain-rate for particles. This alters the average settling rates and other processes. If the mass-loading of the dispersed phase is significant a random "turbulent" flow is generated by the particle settling. A simple demonstration of this is given, showing the statistically axisymmetric character of this flow and how it can modify an ambient turbulent flow.Keywords
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