Thermoelectric convection in a planar capacitor: theoretical studies and experiments in parabolic flights

Elhadj B. Barry; Harunori N. Yoshikawa; Changwoo Kang; Antoine Meyer; Martin Meier; Olivier Crumeyrolle; Christoph Egbers; Innocent Mutabazi

doi:10.5802/crmeca.143

Thermoelectric convection in a planar capacitor: theoretical studies and experiments in parabolic flights
[Convection thermoélectrique dans un condensateur plan : études théoriques et expériences lors des vols paraboliques]

Elhadj B. Barry ¹ ; Harunori N. Yoshikawa ² ; Changwoo Kang ³ ; Antoine Meyer ⁴ ; Martin Meier ⁴ ; Olivier Crumeyrolle ¹ ; Christoph Egbers ⁴ ; Innocent Mutabazi ¹

¹ Normandie Université, UNIHAVRE, LOMC, UMR CNRS 6294, 53, rue de Prony, 76058 Le Havre Cedex, France
² Université Côte d’Azur, INPHYNI, 06100 Nice Cedex, France
³ Department of Mechanical Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si, Jeollabuk-do, 54896, Republic of Korea
⁴ Department of Aerodynamics and Fluid Mechanics, Brandenburg University of Technology Cottbus-Senftenberg, Siemens-Halske-Ring 15a, 03046 Cottbus, Germany

Comptes Rendus. Mécanique, Volume 351 (2023) no. S2, pp. 273-287.

Résumé
Abstract

Nous avons étudié la convection thermoélectrique dans un condensateur plan placé dans un environnement de microgravité et dans des conditions terrestres avec une stratification thermique instable ou stable. L’analyse énergétique montre que dans le cas de stratification stable, la convection thermoélectrique est retardée alors que dans le cas de stratification thermique instable, elle est amplifiée par la poussée d’Archimède avant que cette dernière ne prenne le dessus et pilote la convection thermique naturelle. Une expérience réalisée lors des vols paraboliques illustre la formation de la convection thermoélectrique à la fin de la phase de microgravité.

Thermoelectric convection in a plane capacitor is investigated in a microgravity environment and in the case of the thermal stable and unstable stratification in terrestrial conditions. Energetic analysis shows that in the thermal stable stratification, the thermoelectric convection is delayed while in the thermal unstable stratification, it is enhanced by the Archimedean buoyancy before the latter takes over the dielectrophoretic buoyancy and drives natural thermal convection. An experiment in parabolic flights shows the formation of thermoelectric convection at the end of the microgravity phase.

Reçu le : 2022-07-12
Révisé le : 2022-10-19
Accepté le : 2022-10-21
Première publication : 2023-02-08
Publié le : 2023-11-10

DOI : 10.5802/crmeca.143

Keywords: Thermoelectric convection, Dielectrophoretic force, Electric gravity, Zero-gravity, Convective patterns
Mot clés : Convection thermoélectrique, Force diélectrophorétique, Gravité électrique, Gravité zéro, Motifs de convection

Affiliations des auteurs :

Elhadj B. Barry ¹ ; Harunori N. Yoshikawa ² ; Changwoo Kang ³ ; Antoine Meyer ⁴ ; Martin Meier ⁴ ; Olivier Crumeyrolle ¹ ; Christoph Egbers ⁴ ; Innocent Mutabazi ¹

Licence :

CC-BY 4.0

Droits d'auteur : Les auteurs conservent leurs droits

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     title = {Thermoelectric convection in a planar capacitor: theoretical studies and experiments in parabolic flights},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {273--287},
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Elhadj B. Barry; Harunori N. Yoshikawa; Changwoo Kang; Antoine Meyer; Martin Meier; Olivier Crumeyrolle; Christoph Egbers; Innocent Mutabazi. Thermoelectric convection in a planar capacitor: theoretical studies and experiments in parabolic flights. Comptes Rendus. Mécanique, Volume 351 (2023) no. S2, pp. 273-287. doi : 10.5802/crmeca.143. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.5802/crmeca.143/

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