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Modeling mass transfer and reaction of dilute solutes in a ternary phase system by the lattice Boltzmann method

Fu, Y-H; Bai, L; Luo, K-H; Jin, Y; Cheng, Y; (2017) Modeling mass transfer and reaction of dilute solutes in a ternary phase system by the lattice Boltzmann method. Physical Review E , 95 (4) , Article 043304. 10.1103/PhysRevE.95.043304. Green open access

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Abstract

In this work, we propose a general approach for modeling mass transfer and reaction of dilute solute(s) in incompressible three-phase flows by introducing a collision operator in lattice Boltzmann (LB) method. An LB equation was used to simulate the solute dynamics among three different fluids, in which the newly expanded collision operator was used to depict the interface behavior of dilute solute(s). The multiscale analysis showed that the presented model can recover the macroscopic transport equations derived from the Maxwell-Stefan equation for dilute solutes in three-phase systems. Compared with the analytical equation of state of solute and dynamic behavior, these results are proven to constitute a generalized framework to simulate solute distributions in three-phase flows, including compound soluble in one phase, compound adsorbed on single-interface, compound in two phases, and solute soluble in three phases. Moreover, numerical simulations of benchmark cases, such as phase decomposition, multilayered planar interfaces, and liquid lens, were performed to test the stability and efficiency of the model. Finally, the multiphase mass transfer and reaction in Janus droplet transport in a straight microchannel were well reproduced.

Type: Article
Title: Modeling mass transfer and reaction of dilute solutes in a ternary phase system by the lattice Boltzmann method
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevE.95.043304
Publisher version: http://doi.org/10.1103/PhysRevE.95.043304
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/1557412
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