University of Twente Student Theses


On Faraday waves and jets

Kroon, L.A.M. van der (2012) On Faraday waves and jets.

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Abstract:This thesis is an overview of our investigation of Faraday waves and jets on free surfaces. Faraday waves are standing waves generated by a parametric oscillation. We will consider the parametric oscillation of gravity in this study. A cylinder containing the uid of interest is mounted on a vibration device which shakes the entire setup vertically. In this way the effective gravity is modified which generates period-doubled standing waves in the fluid Continuous excitation leads to very large amplitudes. The surface of the uid becomes unstable and collapses symmetrically. This singularity, caused by inertial focusing, leads to jet formation. High speed imaging techniques are used to capture the surface profiles of the standing waves, cavities and jets. The maximum tip velocity found in our setup was 22ms-1. The dynamics of the bulk flow, the boundary layers and the contact line are treated separately. Their contributions are combined in a single model by considering the mechanical energy.
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:33 physics
Programme:Applied Mathematics MSc (60348)
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