> C. Ruyer-Quil
Lionel Vincent (IRPHE)
We study experimentally the breakup of an axisymmetric liquid volume subject to strong axial stretching. The liquid volume is initially held by surface tension between two supporting rods -as a liquid bridge- or suspended to the upper rod -as a pendant drop-. In both cases, the upper rod is promptly set into a vertical motion, leading to the formation of a slender ligament that eventually breaks. We find that if rod acceleration is constant, breakup time is independent of surface tension, which is a new and unexpected result. If rod velocity is constant, breakup time slightly depend on liquid properties. Both gravity and surrounding gas play a negligible role.