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DY: Fachverband Dynamik und Statistische Physik

DY 26: Fluid dynamics II

DY 26.10: Talk

Thursday, February 28, 2008, 16:30–16:45, MA 001

Temporal instability and breakup characteristics of liquid sheets — •Bernhard Heislbetz, Klaus Madlener, and Helmut Ciezki — DLR Lampoldshausen, Institut für Raumfahrtantriebe, D-74239 Hardthausen

We investigate the temporal instability and the breakup charakteristics of sheets formed by two impinging jets under atmospheric conditions. Thereby we extend the theory for inviscid and viscous liquid sheets to highly viscous Newtonian and Non-Newtonian fluids and show the influence of several hydrodynamic parameters on the breakup process of the fluid sheets.

The results of the theoretical considerations are compared to data obtained by experiments conducted on fluid sheets formed by an doubled like-on-like impinging jet injector.