Experiments in Fluids

, Volume 52, Issue 1, pp 193–205

Horizontal bridges in polar dielectric liquids

  • Jakob Woisetschläger
  • Adam D. Wexler
  • Gert Holler
  • Mathias Eisenhut
  • Karl Gatterer
  • Elmar C. Fuchs
Research Article

Abstract

When a high-voltage direct-current is applied to two beakers filled with polar liquid dielectrica like water or methanol, a horizontal bridge forms between the two beakers. By repeating a version of Pellat’s experiment, it is shown that a horizontal bridge is stable by the action of electrohydrodynamic pressure. Thus, the static and dynamic properties of the phenomenon called a ‘floating water bridge’ can be explained by the gradient of Maxwell pressure, replenishing the liquid within the bridge against any drainage mechanism. It is also shown that a number of liquids can form stable and long horizontal bridges. The stability of such a connection, and the asymmetry in mass flow through such bridges caused by the formation of ion clouds in the vicinity of the electrodes, is also discussed by two further experiments.

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Jakob Woisetschläger
    • 1
  • Adam D. Wexler
    • 2
  • Gert Holler
    • 3
  • Mathias Eisenhut
    • 4
  • Karl Gatterer
    • 5
  • Elmar C. Fuchs
    • 2
  1. 1.Experimental Turbomachinery Research and Optical Measurement Group, Institute for Thermal Turbomachinery and Machine DynamicsGraz University of TechnologyGrazAustria
  2. 2.Wetsus, Center of Excellence for Sustainable Water TechnologyLeeuwardenThe Netherlands
  3. 3.Institute of Electrical Measurement and Measurement Signal ProcessingGraz University of TechnologyGrazAustria
  4. 4.Institute of Analytical Chemistry and Food ChemistryGraz University of TechnologyGrazAustria
  5. 5.Institute of Physical and Theoretical ChemistryGraz University of TechnologyGrazAustria

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