Transfert de chaleur par convection thermoélectrique dans des cavités rectangulaires horizontales

Barry, Elhadj; Kang, Chang Soo; Yoshikawa, Harunori; Mutabazi, Innocent

doi:10.21494/iste.op.2021.0727

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…The system of Equations ( 3) together with the boundary conditions (4) have also been solved using direct numerical simulations (DNS) based on the finite volume method [17]. Periodic boundary conditions have been imposed in the horizontal plane:…”

Section: Direct Numerical Simulationmentioning

confidence: 99%

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

Barry¹,

Yoshikawa²,

Kang³

et al. 2023

Comptes Rendus. Mécanique

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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.

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Section: Direct Numerical Simulationmentioning

confidence: 99%

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

Barry¹,

Yoshikawa²,

Kang³

et al. 2023

Comptes Rendus. Mécanique

Self Cite

View full text Add to dashboard Cite

show abstract

Flow patterns and heat transfer in a dielectric liquid inside a planar capacitor under microgravity conditions

Barry

Kang

Yoshikawa

et al. 2023

Applied Physics Letters

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Heat transfer in a planar capacitor containing a dielectric liquid subject to an increasing high-frequency voltage and a fixed temperature gradient under microgravity is investigated using direct numerical simulations. When the intensity of the applied voltage exceeds a critical value, the dielectrophoretic force induces thermoelectric convection in the form of stationary vortices. The increase in the voltage leads to different types of convective patterns and to the increase in the heat transfer coefficient between the electrodes of the capacitor.

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Electric Buoyancy-driven convection in stable and unstable thermal stratifications

Barry,

Kang,

Yoshikawa

et al. 2024

Physics of Fluids

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Thermo-electro-convective modes induced by a dielectrophoretic force in a differentially heated horizontal rectangular cavity have been investigated using direct numerical simulations in stable and unstable thermal stratifications. The variation of the electric tension applied to the plates of the cavity leads to multiple modes under microgravity as well as under both stable and unstable stratifications in terrestrial conditions. An effective electric Rayleigh number incorporating the effects of both the electric potential and the thermal stratification has been introduced in order to analyze the heat transfer induced by thermoelectric convection, leading to a unique curve of the variation of the Nusselt number with the effective electric Rayleigh number. The results can be used for modeling the heat transfer in microfluidic devices where the Archimedean buoyancy is very weak or to simulate natural convection at any planet using experiments performed on the Earth.

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Transfert de chaleur par convection thermoélectrique dans des cavités rectangulaires horizontales

Cited by 3 publications

References 11 publications

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

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

Flow patterns and heat transfer in a dielectric liquid inside a planar capacitor under microgravity conditions

Electric Buoyancy-driven convection in stable and unstable thermal stratifications

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