Interface Dynamics of Immiscible Fluids under Circularly Polarized Vibration (Experiment)

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This paper is one of a series of experimental studies of immiscible fluid interfaces under vibration of different types. A comparison between the average interface dynamics for high-frequency rotational vibration [1] and translational unidirectional vibration [2, 3] shows that a complication of the oscillation pattern leads to qualitatively novel effects. In this study, the cavity oscillates circularly and translationally in a horizontal plane. Two average vibration effects are discovered: a uniform azimuthal rotation of the fluid relative to the cavity and the excitation of a periodic hexagonal relief on the initially flat fluid interface.