Heat transfer enhancement by a non-uniform electric field in microgravity conditions
| Autor: | Laurent Davoust, Alex Jawichian, Samuel Siedel |
|---|---|
| Přispěvatelé: | Science et Ingénierie des Matériaux et Procédés (SIMaP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Fluid Flow and Transfer Processes
Physics [PHYS]Physics [physics] Angular momentum Convective heat transfer Mechanical Engineering Heat transfer enhancement Computational Mechanics 02 engineering and technology Mechanics Dielectric 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas Temperature gradient [SPI]Engineering Sciences [physics] Mechanics of Materials Electric field 0103 physical sciences Electrohydrodynamics 0210 nano-technology Scaling ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Physics of Fluids Physics of Fluids, American Institute of Physics, 2020, 32 (6), pp.067113. ⟨10.1063/5.0010358⟩ |
| ISSN: | 1070-6631 1089-7666 |
| Popis: | The role of an electric field on dielectric liquids confined in a differentially heated cavity is considered in microgravity conditions. In the purpose of sustaining permanent thermally induced electrohydrodynamic flows, a new electrode arrangement is proposed, different from the typical electrode configurations usually investigated in the literature. The aim is to generate a non-uniform distribution of the imposed electric field and to gain benefit from the existing temperature gradient to generate angular momentum. Scaling analysis and a numerical study are developed in order to investigate dielectrophoretic-induced convective heat transfers. The results show that a significant enhancement of heat transfers is made possible from the use of a non-intense non-uniform electric field with no need for giving rise to unstable regimes. |
| Databáze: | OpenAIRE |
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