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Dauth, Markus ; Aksel, Nuri:
Transition of regular wave fronts to irregular wave fronts in gravity-driven thin films over topography.
In: Acta Mechanica.
Bd. 230
(2019)
.
- S. 2475-2490.
ISSN 1619-6937
DOI: https://doi.org/10.1007/s00707-019-02417-8
Abstract
This article contributes to an understanding of the pathway from regular to chaotic traveling wave fronts over periodically undulated inclines in thin films. In order to investigate the transition from regular to chaotic waves, we used various undulation forms and varied the Reynolds number and the inclination angle in the measurements. Thereby, we revealed the first partially chaotic waves on a gravity-driven thin film channel flow. The wave is subdivided into: (i) the chaotic wave front and (ii) a regular wave tail. The area of the chaotic part can be increased by increasing the inertia of the system. Various phenomena on the flow were revealed: (a) bubble formation, (b) fingering, (c) splashes, and (d) pinch-offs. Our investigation leads to the conclusion that wave breaking over obstacles is a necessary condition for the transition from regular to chaotic wave fronts.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Technische Mechanik und Strömungsmechanik Fakultäten Fakultäten > Fakultät für Ingenieurwissenschaften |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 530 Physik 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 08 Mai 2019 06:32 |
| Letzte Änderung: | 28 Feb 2022 14:04 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/48911 |