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Lattice Boltzmann equation model for multi-component multi-phase flow with high density ratios
Authors:Jie Bao  Laura Schaefer
Affiliation:1. Fluid and Computational Engineering Group, Pacific Northwest National Laboratory, WA 99352, USA;2. Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA 15261, USA
Abstract:
Multi-component multi-phase (MCMP) flows are very common in engineering or industrial problems, as well as in nature. Because the lattice Boltzmann equation (LBE) model is based on microscopic models and mesoscopic kinetic equations, it offers many advantages for the study of multi-component or multi-phase flow problems. While the original formulation of Shan and Chen’s (SC) model can incorporate some MCMP flow scenarios, the density ratio of the different components is greatly restricted to less than approximately 2.0. This obviously limits the applications of this MCMP LBE model. Hence, based on the original SC MCMP model and the improvements in the single-component multi-phase (SCMP) flow model reported by Yuan and Schaefer, we have developed a new model that can simulate a MCMP system with a high density ratio.
Keywords:Lattice Boltzmann equation (LBE) model   Multi-component multi-phase (MCMP)   High density ratio
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