A generalized lattice Boltzmann model for solid–liquid phase change with variable density and thermophysical properties

Yong Zhao, Gerald G. Pereira, Shibo Kuang, Zhenhua Chai, Baochang Shi

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In this paper, we modify the calculations of volume fraction of liquid and temperature, and propose a generalized two-relaxation-time (TRT) lattice Boltzmann model for the solid–liquid phase change problem with variable density and thermophysical properties. Two benchmark problems are used to validate the new model. The results show that this generalized model can handle the differences in both density and thermophysical properties.

Original languageEnglish
Article number106250
Number of pages6
JournalApplied Mathematics Letters
Publication statusPublished - Jun 2020


  • Lattice Boltzmann method
  • Solid–liquid phase change
  • Variable density and thermophysical properties

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