Radial distribution and axial dispersion of suspended particles inside a narrow cylinder due to mildly inertial flow

Bhattacharya, S.; Gurung, D. K.; Navardi, S.
March 2013
Physics of Fluids;Mar2013, Vol. 25 Issue 3, p033304
Academic Journal
The combined effects of radial drift due to flow inertia and diffusion due to Brownian motion significantly modify the radial probability distribution and the axial dispersion of conduit-bound suspended bodies. This interplay depends on the product of Peclet Pe and Reynolds Re numbers so that even apparently non-Brownian systems with high Pe exhibit the changes if Re is small. This article describes the probability distribution and the Taylor dispersion coefficient under such conditions for systems with low vessel-to-particle size-ratios where the effect is especially pronounced, but the flow-simulation is considerably difficult. We also identify the parametric regimes and the physical conditions required to see a substantial manifestation of the effect.


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