Year: 2023
Author: André S. Nunes, Rodrigo C. V. Coelho, Vasco C. Braz, Margarida M. Telo da Gama, Nuno A. M. Araújo
Communications in Computational Physics, Vol. 33 (2023), Iss. 1 : pp. 1–21
Abstract
We investigate the sedimentation dynamics of a binary mixture, the species of which differ by their Stokes coefficients but are identical otherwise. We analyze the sedimentation dynamics and the morphology of the final deposits using Brownian dynamics simulations for mixtures with a range of sedimentation velocities of both species. In addition, we use the lattice Boltzmann method to study hydrodynamic effects. We found a threshold in the difference of the sedimentation velocities above which the species in the final deposit are segregated. The degree of segregation increases with the difference in the Stokes coefficients or the sedimentation velocities above the threshold. We propose a simple analytical model that captures the main features of the simulated deposits.
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Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.4208/cicp.OA-2021-0244
Communications in Computational Physics, Vol. 33 (2023), Iss. 1 : pp. 1–21
Published online: 2023-01
AMS Subject Headings: Global Science Press
Copyright: COPYRIGHT: © Global Science Press
Pages: 21
Keywords: Sedimentation Brownian dynamics lattice Boltzmann method.