title: Transition from symmetric to asymmetric scaling function before drop pinch-off.
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.
authors.affiliation: Physikalisches Institut, Experimentalphysik V, Universität Bayreuth, D-95440 Bayreuth, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Rothert
authors.forename: R
authors.initials: R
authors.lastname: Richter
authors.forename: I
authors.initials: I
authors.lastname: Rehberg