Abstract
On the basis of a model of the collisions of solid particles, the specific features of gas-particle flows in vertical pipes are numerically simulated. The model treats the dispersed phase as a continuum (Eulerian description) consisting of N particle fractions moving with different linear and angular velocities, which result in the particle collisions. The effective viscosity coefficients introduced serve for the closure of the transport equations for the momentum, the angular momentum, and the mass of the different particle fractions. It is shown that taking the collisions of the particles of different fractions into account ensures a satisfactory description of the specific features of the distribution of the particle concentration and the mean and fluctuation velocities of the carrier phase in upward and downward pipe flows.
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Translated from Izvestiya Rossiiskoi Academii Nauk, Mekhanika Zhidkosti i Gaza, No. 5, 2004, pp. 84–93. Original Russian Text Copyright © 2004 by Kartushinskii, Michaelides, and Rudi.
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Kartushinskii, A.I., Michaelides, E.E. & Rudi, Y.A. Numerical modeling of gas-particle flows in vertical pipes and the particle collision effect. Fluid Dyn 39, 748–755 (2004). https://doi.org/10.1007/s10697-005-0008-5
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DOI: https://doi.org/10.1007/s10697-005-0008-5