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Wetsus - Centre of Excellence for Sustainable Water Technology

2 ARTICLES PUBLISHED IN JoVE

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Engineering

The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
Adam D. Wexler 1, Mónica López Sáenz 2, Oliver Schreer 2, Jakob Woisetschläger 3, Elmar C. Fuchs 1
1Applied Water Physics, Wetsus - Centre of Excellence for Sustainable Water Technology, 2IRCAM GmbH, 3Institute for Thermal Turbomachinery and Machine Dynamics, Graz University of Technology

Horizontal and vertical electrohydrodynamic liquid bridges are simple and powerful tools for exploring the interaction of high intensity electric fields and polar dielectric liquids. The construction of basic apparatus and operational examples, including thermographic images, for three liquids (e.g., water, DMSO, and glycerol) is presented.

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Engineering

Preparation of Free-Surface Hyperbolic Water Vortices
Roman Klymenko 1,5, Harmen Nanninga 2, Esther de Kroon 1, Luewton L. F. Agostinho 1,2, Elmar C. Fuchs 1,3, Jakob Woisetschläger 4, Wilfred F. L. M. Hoeben 5
1Wetsus - Centre of Excellence for Sustainable Water Technology, 2Water Technology Research Group, NHL Stenden University of Applied Sciences, 3Optical Sciences Group, Faculty of Science and Technology (TNW), University of Twente, 4Institute for Thermal Turbomachinery and Machine Dynamics, Graz University of Technology, 5Department of Electrical Engineering, Electrical Energy Systems group, Eindhoven University of Technology

This paper describes how three different water vortex regimes in a hyperbolic Schauberger funnel can be created, their most important characteristics, and how associated parameters such as the oxygen transfer rates can be calculated.

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