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Induced soap-film flow by non-uniform alternating electric field

Shirsavar, R ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1016/j.elstat.2014.10.007
  3. Publisher: Elsevier , 2015
  4. Abstract:
  5. Fluid flows generated on soap films by non-uniform alternating electric fields are studied. Two parallel metal rods subjected to an AC voltage are placed perpendicular to the soap film, which is anchored in a dielectric frame. The fluid flow is generated by electrohydrodynamic induction. At very low signal frequencies there is induced surface charge, but there is no tangential electric field at the surface, so there is no force and no flow. Fluid flow is observed increasing the frequency, when there are both surface charge and tangential electric field. The flow velocity increases with decreasing thickness of the soap film
  6. Keywords:
  7. Liquid film ; Electric fields ; Electrohydrodynamics ; Electromagnetic fields ; Flow velocity ; Ac electrokinetics ; Ac voltage ; Alternating electric field ; Metal rods ; Non-uniform ; Signal frequencies ; Soap films ; Tangential electric field ; Flow of fluids
  8. Source: Journal of Electrostatics ; Volume 73 , February , 2015 , Pages 112-116 ; 03043886 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S0304388614000916