Dresden 2009 – wissenschaftliches Programm
DY 12.7: Poster
Dienstag, 24. März 2009, 14:30–16:30, P1A
Study of Droplet-Coalescence for Miscible Liquids — •Stefan Menzel and Michael Bestehorn — Lehrstuhl Statistische Physik/ Nichtlineare Dynamik, Brandenburgische Technische Universität Cottbus, Deutschland
Two miscible droplets flowing together are studied numerically using an extension of the thin film equation. Recent experimental observations show that sessile droplets not only fuse instantaneously after peripheral contact but also coalesce delayed for many seconds . This rather unusual behavior occurred for droplets with small contact angles consisting of different liquids. After initial contact a thin gap between the droplets was observed through which liquid is exchanged from the low to the high surface tension liquid.
 H. Riegler, P. Lazar, Langmuir Vol. 24 (2008) 6395-6398.