Thermo-electro-hydrodynamic convection under microgravity: a review

Recent studies on thermo-electro-hydrodynamic (TEHD) convection are reviewed with focus on investigations motivated by the analogy with natural convection. TEHD convection originates in the action of the dielectrophoretic force generated by an alternating electric voltage applied to a dielectric flu...

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Bibliographic Details
Published in:Fluid dynamics research 2016-11, Vol.48 (6), p.61413
Main Authors: Mutabazi, Innocent, Yoshikawa, Harunori N, Fogaing, Mireille Tadie, Travnikov, Vadim, Crumeyrolle, Olivier, Futterer, Birgit, Egbers, Christoph
Format: Article
Language:English
Subjects:
electrohydrodynamics
Fluid mechanics
Mechanics
microgravity
Physics
thermal convection
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Summary:Recent studies on thermo-electro-hydrodynamic (TEHD) convection are reviewed with focus on investigations motivated by the analogy with natural convection. TEHD convection originates in the action of the dielectrophoretic force generated by an alternating electric voltage applied to a dielectric fluid with a temperature gradient. This electrohydrodynamic force is analogous to Archimedean thermal buoyancy and can be regarded as a thermal buoyancy force in electric effective gravity. The review is concerned with TEHD convection in plane, cylindrical, and spherical capacitors under microgravity conditions, where the electric gravity can induce convection without any complexities arising from geometry or the buoyancy force due to the Earth's gravity. We will highlight the convection in spherical geometry, comparing developed theories and numerical simulations with the GEOFLOW experiments performed on board the International Space Station (ISS).
ISSN:0169-5983
1873-7005
DOI:10.1088/0169-5983/48/6/061413