TY - GEN
T1 - Lattice boltzmann model simulation of bubble deformation and breakup induced by micro-scale couette flow
AU - Atykhan, Magzhan
AU - Dauyeshova, Bagdagul Kabdenova
AU - Rojas-Solorzano, Luis
AU - Monaco, Ernesto
N1 - Funding Information:
This work was supported by Nazarbayev University MSc and PhD studentships of Magzhan Atykhan and Bagdagul Dauyeshova, respectively, funded by the Ministry of Education and Science of the Republic of Kazakhstan. This work is also funded within the project NU Faculty Development Competitive Research Grants 2018, “Simulation of CO2 flow in porous media using Lattice Boltzmann Model”, #-SOE2018016, Grant number: 090118FD5321 The results reported in this study were obtained by using a modified version of the DL_MESO LBM package https://www.scd.stfc.ac.uk. The authors acknowledge Dr. M.Seaton for providing the original version of the code.
Publisher Copyright:
© 2020 ASME.
PY - 2020
Y1 - 2020
N2 - Understanding the morphology of transformation of a single bubble immersed in a liquid undergoing a shear flow is essential in predicting bubble deformation and breakup phenomena commonly found in applications involving complex liquid-gas multiphase flow. In this study, the deformation and breakup of a single bubble released in a fully developed laminar Couette flow in a micro-scale domain are evaluated under different spanwise positions, as well as under different initial diameters. The simulation is carried out using a multiphase Shan-Chen Lattice Boltzmann Model (SC-LBM). The transition between deformation and breakup experienced by the bubble is described under different Capillary (Ca) numbers, viscosity ratios and relative initial spanwise positions with respect to the channel centreline. A critical Ca number, Cac = 0.31, was found at the onset of breakup, with bubble centroid location varying as a function of the remaining parameters. The results obtained with the SC-LBM are in excellent agreement with those published in the literature.
AB - Understanding the morphology of transformation of a single bubble immersed in a liquid undergoing a shear flow is essential in predicting bubble deformation and breakup phenomena commonly found in applications involving complex liquid-gas multiphase flow. In this study, the deformation and breakup of a single bubble released in a fully developed laminar Couette flow in a micro-scale domain are evaluated under different spanwise positions, as well as under different initial diameters. The simulation is carried out using a multiphase Shan-Chen Lattice Boltzmann Model (SC-LBM). The transition between deformation and breakup experienced by the bubble is described under different Capillary (Ca) numbers, viscosity ratios and relative initial spanwise positions with respect to the channel centreline. A critical Ca number, Cac = 0.31, was found at the onset of breakup, with bubble centroid location varying as a function of the remaining parameters. The results obtained with the SC-LBM are in excellent agreement with those published in the literature.
KW - Bubble breakup
KW - Capillary number
KW - LBM
KW - Multiphase flow
KW - ShanChen
KW - Viscosity ratio
UR - http://www.scopus.com/inward/record.url?scp=85101201172&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85101201172&partnerID=8YFLogxK
U2 - 10.1115/IMECE2020-23772
DO - 10.1115/IMECE2020-23772
M3 - Conference contribution
AN - SCOPUS:85101201172
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
BT - Fluids Engineering
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2020 International Mechanical Engineering Congress and Exposition, IMECE 2020
Y2 - 16 November 2020 through 19 November 2020
ER -
