2023/12/01 by Long Ju, Ju, Long, Zhaoli Guo +5
Engineering · #Computational Physics (physics.comp-ph) #FOS: Physical sciences #Fluid Dynamics and Thin Films #Lattice Boltzmann Simulation Studies #Mathematical Physics (math-ph) #Nanomaterials and Printing Technologies
paper · pdf · doi:10.48550/arxiv.2312.00369
openalex publication_date 2023/12/01 · openalex created_date 2023/12/05 · openalex updated_date 2026/08/01
This paper proposes a new strategy to implement the free-energy based wetting boundary condition within the phase-field lattice Boltzmann method. The greatest advantage of the proposed method is that the implementation of contact line motion can be significantly simplified while still maintaining good accuracy. For this purpose, the liquid-solid free energy is treated as a part of the chemical potential instead of the boundary condition, thus avoiding complicated interpolations with irregular geometries. Several numerical testing cases including the droplet spreading processes on the idea flat, inclined and curved boundaries are conducted, and the results demonstrate that the proposed method has good ability and satisfactory accuracy to simulate contact line motions.