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Improved phase-field-based lattice Boltzmann models with a filtered collision operator

Author

Listed:
  • Hiroshi Otomo

    (Dassault Systémes, 55 Network Drive, Burlington, MA 01803, USA)

  • Raoyang Zhang

    (Dassault Systémes, 55 Network Drive, Burlington, MA 01803, USA)

  • Hudong Chen

    (Dassault Systémes, 55 Network Drive, Burlington, MA 01803, USA)

Abstract

In this study, a phase-field lattice Boltzmann model based on the Allen–Cahn equation with a filtered collision operator and high-order corrections in the equilibrium distribution functions is presented. Here, we show that in addition to producing numerical results consistent with prior numerical methods, analytic solutions, and experiments with the density ratio of 1000, previous numerical deficiencies are resolved. Specifically, the new model is characterized by robustness at low viscosity, accurate prediction of shear stress at interfaces, and removal of artificial dense bubbles and rarefied droplets, etc.

Suggested Citation

  • Hiroshi Otomo & Raoyang Zhang & Hudong Chen, 2019. "Improved phase-field-based lattice Boltzmann models with a filtered collision operator," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 30(10), pages 1-11, October.
    • Handle: RePEc:wsi:ijmpcx:v:30:y:2019:i:10:n:s0129183119410092
    DOI: 10.1142/S0129183119410092
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