Lattice Boltzmann Study of Bubble Dynamics

Abstract

The purpose of this work is to assess the applicability of a new two-phase immiscible lattice Boltzmann method based on phase-field method to single bubble dynamics over a wide range of flow regimes. In two-dimensional domain, the bubble geometry, the interface deformation, and the bubble rise characteristics, such as terminal velocity, drag coefficient, and wake properties, are investigated and quantified using dimensionless parameters. These results are further verified by three-dimensional simulations. The results show an excellent agreement with those of the experimental studies and the level-set and volume-of-fluid numerical approaches.