The authors focus on coalescence of liquid droplets with/without suspended particles in a vertical tube filled with a quiescent fluid. Motion of single or two droplets moving upward due to buoyancy force in the tube and coalescence time (i.e., period between instances when the relative velocity of two droplets becomes zero after their apparent contact and when the coalescence takes place) are examined. Effects of suspended particles in the droplets on their coalescence and induced flow in coalescing droplets are also investigated by using image processing.
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9th Symposium on Fundamental Issues and Perspectives in Fluid Mechanics
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