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Simulation Of Droplet Impacting A Square Solid Obstacle In Microchannel With Different Wettability By Using High Density Ratio Pseudopotential Multiplerelaxation- Time (Mrt) Lattice Boltzmann Method (Lbm), Wandong Zhao, Ying Zhang, Wenqiang Shang, Zhaotai Wang, Ben Xu, Shuisheng Jiang
Simulation Of Droplet Impacting A Square Solid Obstacle In Microchannel With Different Wettability By Using High Density Ratio Pseudopotential Multiplerelaxation- Time (Mrt) Lattice Boltzmann Method (Lbm), Wandong Zhao, Ying Zhang, Wenqiang Shang, Zhaotai Wang, Ben Xu, Shuisheng Jiang
Mechanical Engineering Faculty Publications and Presentations
In this paper, a pseudopotential high density ratio (DR) lattice Boltzmann Model was developed by incorporating multi-relaxation-time (MRT) collision matrix, large DR external force term, surface tension adjustment external force term and solid-liquid pseudopotential force. It was found that the improved model can precisely capture the two-phase interface at high DR. Besides, the effects of initial Reynolds number, Weber number, solid wall contact angle (CA), ratio of obstacle size to droplet diameter ( 1 χ ), ratio of channel width to droplet diameter ( 2 χ ) on the deformation and breakup of droplet when impacting on a square obstacle …