Underwater bubble pinch-off: the decay of advection out of the singularity

Details Underwater bubble pinch-off: the decay of advection out of the singularity Underwater bubble pinch-off: the decay of advection out of the singularity

2011-01-31

arxiv.org/abs/1101.6059v1

Physics

Fluid Dynamics

5 pages, 5 figures, submitted to Physical Review Letters

Scientific paper

Air bubble pinch-off is a type of implosion singularity that exhibits memory. Provided that the final collapse is radial, a small azimuthal vibration maintains fixed amplitude in time. We numerically test whether radial collapse results when a strong vertical advection from the neck minimum region is present. Regardless of the initial shape, advection always rapidly elongates the neck into a short cylindrical segment. The pinch-off then becomes dominated by radial collapse. Thus, the memory-encoding singularity dynamics is robust.

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