Influence of the thermo-electric coupling on the heat transfer in cylindrical annulus with a dielectric fluid under microgravity

Travnikov Vadim; Crumeyrolle Olivier; Mutabazi Innocent

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Influence of the thermo-electric coupling on the heat transfer in cylindrical annulus with a dielectric fluid under microgravity

机译：热电耦合对微重力下介电流体在圆柱环带中传热的影响

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The present note gives the result of direct numerical simulations of the convective flow induced by the dielectric force in a cylindrical annulus under microgravity conditions. A dielectric fluid confined between two coaxial cylinders is subject to a high-frequency tension and a radial temperature gradient. The resulting buoyancy force creates a supercritical convective flow when the critical value of the electric Rayleigh number is exceeded. This flow is made of stationary helicoidal vortices. The effect of the thermo-electric coupling is sensitive for large values of the radius ratio: it stabilizes the conductive state and reduces the slope of the increase of the heat transfer and of the kinetic energy. (C) 2016 IAA. Published by Elsevier Ltd. All rights reserved.

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来源
《Acta astronautica》 |2016年第12期|88-94|共7页
作者
Travnikov Vadim; Crumeyrolle Olivier; Mutabazi Innocent;
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作者单位

Univ Havre, Normandie Univ, UMR CNRS 6294, Lab Ondes & Milieux Complexes, 53 Rue Prony,CS80540, F-76058 Le Havre, France;

Univ Havre, Normandie Univ, UMR CNRS 6294, Lab Ondes & Milieux Complexes, 53 Rue Prony,CS80540, F-76058 Le Havre, France;

Univ Havre, Normandie Univ, UMR CNRS 6294, Lab Ondes & Milieux Complexes, 53 Rue Prony,CS80540, F-76058 Le Havre, France;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Natural convection; Electrohydrodynamics; Spectral methods; Direct numerical simulation;

机译：自然对流电动流体动力学谱方法直接数值模拟;

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Influence of the thermo-electric coupling on the heat transfer in cylindrical annulus with a dielectric fluid under microgravity

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