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Published on: November 19, 2016
Effects of Polarization on Particle-Laden Flows
Jari Kolehmainen1, Ali Ozel1, Yile Gu1
1Department of Chemical and Biological Engineering, Princeton University, Olden Street, Princeton, New Jersey 08544, USA.
Abstract:
Simulations of particle-laden flow with dielectric particles are carried out with varying levels of electrical charging and particle polarization. Simulation results reveal three distinct flow regions. For low particle charge and polarizability, flow is nearly symmetric and nonmeandering. For strong charging and polarization, particles form a continuous and tightly clustered sheet close to one of the walls. Between these extremes, particles form localized particle-rich regions, around which the gas executes a meandering flow. These results indicate that polarization can lead to qualitative changes in the characteristics of particle-laden flows subject to tribocharging.
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