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Title: Observations of the coalescence of miscible drops
Authors: QIAN BIAN
Keywords: free-surface flow, drop coalescence, Marangoni wave, self-similar, curvature
Issue Date: 31-Mar-2006
Citation: QIAN BIAN (2006-03-31). Observations of the coalescence of miscible drops. ScholarBank@NUS Repository.
Abstract: The coalescence motions of two fluid liquid masses were imaged and observed with a PIV camera. The effects of large difference of surface tension and viscosity between liquid masses on the coalescence motions were explored. Marangoni waves were observed in the coalescence of a water drop with a pool of ethanol and the wave was shown to be self-similar scaled with time to the 3/2 power. When high viscosity difference applied between the liquid masses, capillary wave dampened and a sharp corner characterizes the region where two fluids meet. Moreover, limited experiments were carried out with surfactants solutions coalescing with pure water drops.
Appears in Collections:Master's Theses (Open)

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