Assessment of the high-order isotropic tensor in interaction force of pseudo-potential lattice Boltzmann model for multiphase flows

Abstract
The multirange pseudo-potential lattice Boltzmann model (PP-LBM) for multiphase flows was successfully implemented along with various strategies to diminish the parasitic currents and enhance numerical stability. The predicted PP-LBM results show a good agreement with the analytical Carnahan–Starling equation of state coexistence curve, in which the maximum average error did not exceed 2%. It is found that increasing the isotropic order of the interaction force has a stronger impact on the magnitude of the spurious velocities, as compared to the implementation of more sophisticated collision operators.

Citation
Restrepo Cano, J. G., Hernandez Perez, F. E., & Im, H. G. (2022). Assessment of the high-order isotropic tensor in interaction force of pseudo-potential lattice Boltzmann model for multiphase flows. AIAA SCITECH 2022 Forum. doi:10.2514/6.2022-0583

Acknowledgements
This work was sponsored by King Abdullah University of Science and Technology (KAUST).

Publisher
American Institute of Aeronautics and Astronautics

Conference/Event Name
AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022

DOI
10.2514/6.2022-0583

Additional Links
https://arc.aiaa.org/doi/10.2514/6.2022-0583

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