A wave for spray atomization
Event details
| Date | 05.11.2010 |
| Hour | 11:00 |
| Speaker | Dr. Jérôme Hoepffner, Institut Jean Le Rond d'Alembert, France |
| Location |
MEB10
|
| Category | Conferences - Seminars |
A perturbation is induced at the sheared interface between a stream of liquid and a stream of gas. This initial perturbation then evolves as the reponse of inertia, viscosity and interfacial tension. The initial condition we have considered is localized in space. We observe as a result a single Kelvin-Helmholtz wave, tending to a self similar regime after a short transient. We describe the anatomy of this well-defined entity as the physical parameters are varied, especially the density ratio of the two phases. This study is aimed at identifying a possible recurrent agent in atomization processes, as observed for instance in Marmottant and Villermaux (2004). The numerical simulations are performed using the volume of fluid method for interface tracking.
Practical information
- General public
- Free