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DY: Fachverband Dynamik und Statistische Physik
DY 70: Poster: Flows, Patterns, Delay, Reaction Diffusion
DY 70.3: Poster
Donnerstag, 15. März 2018, 15:30–18:00, Poster A
Liquid meniscus and film states driven by a surface acoustic wave — •Kevin David Joachim Mitas1, Ofer Manor3, and Uwe Thiele1,2 — 1Institut für Theoretische Physik, Westfälische Wilhelms-Universität Münster, Wilhelm Klemm Straße 9, D-48149 Münster, Germany — 2Center of Nonlinear Science (CeNoS), Westfälische Wilhelms-Universität Münster, Corrensstr. 2, D-48149 Münster, Germany — 3Department of Chemical Engineering. Technion - Israel Institute of Technology, Haifa 32000, Israel
We study the shape of a liquid meniscus and the transfer of a liquid film from a bath of Newtonian liquid onto a (moving) plate under the influence of a Rayleigh surface acoustic wave (SAW). This Landau-Levich-type problem is studied with a thin-film equation that combines SAW driving (employed in [1] for wetting liquid) with the standard dragged-film problem for partially wetting liquid [2] to account for SAW driving in the case of partially wetting liquids. We use numerical path-continuation methods [3] to obtain the pertinent bifurcation diagrams that allow us to discuss the occuring qualitative transitions. [1] M. Moronov and O. Manor. J., Fluid Mech., 810:307–322, 2017; [2] M. Galvagno., D. Tseluiko, H. Lopez and U. Thiele, Phys. Rev. Lett., 112:137803, 2014; [3] H. A. Dijkstra et al., Comun. Comput. Phys., 15:1–45, 2014.