Abstract
Particle-laden interface especially particle-loaded gas–liquid interface widely exists in actual applications of gas–liquid-solid multiphase flow. This study reported the pinch-off dynamics and initial deformation of a bubble loaded with a particle in various liquids. The relative size and position between bubble and particle, and liquid properties, jointly affect the pinch-off dynamics. If the particle locates in the bubble neck region (PLB-n), the pinch-off process is hindered, and the exponent (b = 0.6 − 0.67) is higher than that of pure bubble, while if the particle is on the upper or bottom part of the bubble neck (PLB-u/PLB-b), it promotes the pinch-off process and leads to a lower exponent (b = 0.4 − 0.5) compared to the pure bubble. In addition, at the initial stage after pinch-off, both the loaded-particle and the liquid properties affect the gas–liquid interface deformation and bubble-particle relative motion.
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