Open AccessNumerical Study of Droplet Behavior on an Oscillating Plate Using OpenFOAM
Author(s) -
Takashi Suzuki,
Akihiko Mitsuishi
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/920/1/012036
Subject(s) - oscillation (cell signaling) , mechanics , amplitude , volume of fluid method , physics , rotational symmetry , acceleration , azimuth , classical mechanics , optics , flow (mathematics) , genetics , biology
The interfacial behaviour of a liquid droplet placed on an oscillating plate was simulated numerically by VOF method for the better understanding of the transition process of the surface fluctuation from the axisymmetric mode to the complicated mode which is leading to the interface burst and spray formation. The target of analysis was a water droplet of 100μL placed on a flat plate. In the place of the plate oscillation, a sinusoidal acceleration-oscillation was applied with the gravitational acceleration. The frequency of the acceleration-oscillation was ranging from 300 Hz to 900 Hz. The range of the acceleration-oscillation amplitude was from 3g to 60g. The computational domain was set to include a quarter of the droplet. In the numerical simulation, axisymmetric concentric waves and superposed azimuthal waves appeared on the droplet surface. The surface fluctuation grew in magnitude with an increase in the acceleration-oscillation amplitude, and the complexity of the interface increased due to the coalescences of the crests of the surface fluctuation.