Transition from Symmetric to Asymmetric Scaling Function before Drop Pinch-Off

Titelangaben

Rothert, Alexander ; Richter, Reinhard ; Rehberg, Ingo:
Transition from Symmetric to Asymmetric Scaling Function before Drop Pinch-Off.
In: Physical Review Letters. Bd. 87 (2001) Heft 8 . - 084501.
ISSN 1079-7114
DOI: https://doi.org/10.1103/PhysRevLett.87.084501

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Abstract

The drop pinch-off at a nozzle is studied experimentally for a glycerin-water mixture in surrounding air. The neck diameter of the fluid shrinks with constant velocity. After a distinct transition point, the shrink velocity switches to a smaller value. Before that transition point, the shape of the neck can well be described by a symmetric scaling function, as obtained from Stokes-flow theory of drop formation. This function gives way to an asymmetric scaling function in the final stage before pinch-off.