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Volume 16, Issue 2
Effect of Thermal Convection and Mass Transfer on Particle Motion During Sedimentation: A Numerical Study

Junjie Hu & Dongke Sun

Adv. Appl. Math. Mech., 16 (2024), pp. 549-568.

Published online: 2024-01

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  • Abstract

The sedimentation of a particle cluster with heat and mass transfer is studied with the lattice Boltzmann method. To investigate the effect of thermal convection and mass transfer on the motion of the particle cluster, four cases are studied, namely, without heat and mass transfer, with heat transfer, with mass transfer and with heat and mass transfer. Compared to mass transfer, the effect of thermal convection is more dominant, which affects the motion of the particle cluster significantly. The particle-particle interaction is enforced by thermal convection, and the oscillation of the average settling velocity of the particle cluster is more intense. Besides, with mass transfer between the particles and the fluid, the mass of the particles decreases, the motion of the particles is more sensitive to the fluid flow, the velocity fluctuation of the particle cluster is more intense, the distribution of the particle cluster is more inhomogeneous.

  • AMS Subject Headings

35Q30, 76D05

  • Copyright

COPYRIGHT: © Global Science Press

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@Article{AAMM-16-549, author = {Hu , Junjie and Sun , Dongke}, title = {Effect of Thermal Convection and Mass Transfer on Particle Motion During Sedimentation: A Numerical Study}, journal = {Advances in Applied Mathematics and Mechanics}, year = {2024}, volume = {16}, number = {2}, pages = {549--568}, abstract = {

The sedimentation of a particle cluster with heat and mass transfer is studied with the lattice Boltzmann method. To investigate the effect of thermal convection and mass transfer on the motion of the particle cluster, four cases are studied, namely, without heat and mass transfer, with heat transfer, with mass transfer and with heat and mass transfer. Compared to mass transfer, the effect of thermal convection is more dominant, which affects the motion of the particle cluster significantly. The particle-particle interaction is enforced by thermal convection, and the oscillation of the average settling velocity of the particle cluster is more intense. Besides, with mass transfer between the particles and the fluid, the mass of the particles decreases, the motion of the particles is more sensitive to the fluid flow, the velocity fluctuation of the particle cluster is more intense, the distribution of the particle cluster is more inhomogeneous.

}, issn = {2075-1354}, doi = {https://doi.org/10.4208/aamm.OA-2022-0056}, url = {http://global-sci.org/intro/article_detail/aamm/22343.html} }
TY - JOUR T1 - Effect of Thermal Convection and Mass Transfer on Particle Motion During Sedimentation: A Numerical Study AU - Hu , Junjie AU - Sun , Dongke JO - Advances in Applied Mathematics and Mechanics VL - 2 SP - 549 EP - 568 PY - 2024 DA - 2024/01 SN - 16 DO - http://doi.org/10.4208/aamm.OA-2022-0056 UR - https://global-sci.org/intro/article_detail/aamm/22343.html KW - Particle sedimentation, thermal convection, mass transfer, lattice Boltzmann method. AB -

The sedimentation of a particle cluster with heat and mass transfer is studied with the lattice Boltzmann method. To investigate the effect of thermal convection and mass transfer on the motion of the particle cluster, four cases are studied, namely, without heat and mass transfer, with heat transfer, with mass transfer and with heat and mass transfer. Compared to mass transfer, the effect of thermal convection is more dominant, which affects the motion of the particle cluster significantly. The particle-particle interaction is enforced by thermal convection, and the oscillation of the average settling velocity of the particle cluster is more intense. Besides, with mass transfer between the particles and the fluid, the mass of the particles decreases, the motion of the particles is more sensitive to the fluid flow, the velocity fluctuation of the particle cluster is more intense, the distribution of the particle cluster is more inhomogeneous.

Junjie Hu & Dongke Sun. (2024). Effect of Thermal Convection and Mass Transfer on Particle Motion During Sedimentation: A Numerical Study. Advances in Applied Mathematics and Mechanics. 16 (2). 549-568. doi:10.4208/aamm.OA-2022-0056
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