Study of the motion of a droplet in a microchannel using Shan-Chen multiphase lattice Boltzmann model

Bagdagul Dauyeshova, Luis R. Rojas-Solórzano, Ernesto Monaco

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Citations (Scopus)

Abstract

This paper presents a study of the motion of a deformable droplet modeled using Shan-Chen (SC) Multiphase Lattice Boltzmann Model (LBM). Firstly, a 2D static droplet in a periodic domain is modeled such that its surface tension is numerically determined and successfully validated against Young-Laplace equation. Next, simulation of a 2D droplet transported by a gas stream along a periodic microchannel is carried out. Initially, the droplet is placed close to the top wall and surrounded by a gas stream which is originally flowing in fully developed condition, as described by the classical plane Poiseuille flow. Both the droplet and the carrier fluid have same kinematic viscosities but different densities. The simulation is extended until pseudo-steady state, determined by a constant vertical position and normalized velocity, is reached. The results of this study are successfully validated using available data from previous highly-accurate numerical work. The LBM demonstrated a number of major advantages such as easiness to set up, ability to track the phase interface automatically and its inherent parallel capacity which helped reducing the computational time. However, numerical results obtained with the SC-LBM, which is presented in this study, demonstrate that the LBM also has limitations in handling large density and viscosity ratios between the phases.

Original languageEnglish
Title of host publicationChemical Engineering Transactions
PublisherItalian Association of Chemical Engineering - AIDIC
Pages1267-1272
Number of pages6
Volume57
ISBN (Electronic)9788895608488
DOIs
Publication statusPublished - 2017

Publication series

NameChemical Engineering Transactions
Volume57
ISSN (Electronic)2283-9216

ASJC Scopus subject areas

  • Chemical Engineering(all)

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    Dauyeshova, B., Rojas-Solórzano, L. R., & Monaco, E. (2017). Study of the motion of a droplet in a microchannel using Shan-Chen multiphase lattice Boltzmann model. In Chemical Engineering Transactions (Vol. 57, pp. 1267-1272). (Chemical Engineering Transactions; Vol. 57). Italian Association of Chemical Engineering - AIDIC. https://doi.org/10.3303/CET1757212