Non-uniformly receding contact line breaks axisymmetric flow patterns
Hyoungsoo Kim,
Naser Belmiloud,
Paul W. Mertens
Abstract:We investigate the internal flow pattern of an evaporating droplet using tomographic particle image velocimetry (PIV) when the contact line non-uniformly recedes. We observe a three-dimensional azimuthal vortex pair while the contact line non-uniformly recedes and the symmetry-breaking flow field is maintained during the evaporation. Based on the experimental results, we show that the vorticity magnitude of the internal flow is related to the relative contact line motion. Furthermore, to explain how the azimut… Show more
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