基于格子Boltzmann方法的二维气泡群熟化过程模拟

Translated title of the contribution: Lattice Boltzmann method based simulation of two dimensional bubble group ripening process

Xiao Peng Chen, Jun Peng Feng, Hai Bao Hu, Peng Du, Ti Kang Wang

Research output: Contribution to journalArticlepeer-review

Abstract

Ostwald ripening refers to a process of a particle/droplet/bubble system under local thermal equilibrium state adjusting the size distribution spontaneously to reduce the total surface energy. A lattice Boltzmann approach is used to simulate the ripening process of a two dimensional vapor bubble cluster dominated by phase transition kinetics. By comparing the numerical results with the theoretical prediction derived in two-dimensional space, it is shown that the lattice Boltzmann method is accurate in the simulations. The results also indicate that the mass transfer in liquid phase is driven by hydrodynamic pressure distribution and the hydrodynamic collapse of the bubbles influences the size distribution function in a small size region. The influence of the parameters in the equation of state of the material is studied further. A positive relation between phase transition speed and specific internal energy is proposed, which enhances the thermal fundamental of phase transition.

Translated title of the contributionLattice Boltzmann method based simulation of two dimensional bubble group ripening process
Original languageChinese (Traditional)
Article number110504
JournalWuli Xuebao/Acta Physica Sinica
Volume71
Issue number11
DOIs
StatePublished - 5 Jun 2022

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