Thermalization of a Two-Phase Fluid in Low Gravity: Heat Transferred from Cold to Hot | Zendy

Régis Wunenburger | Zendy; Yves Garrabos | Zendy; Carole Lecoutre-Chabot | Zendy; D. Beysens | Zendy; John Hegseth | Zendy

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Thermalization of a Two-Phase Fluid in Low Gravity: Heat Transferred from Cold to Hot

Author(s) -

Régis Wunenburger,

Yves Garrabos,

Carole Lecoutre-Chabot,

D. Beysens,

John Hegseth

Publication year - 2000

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.84.4100

Subject(s) - thermistor , materials science , overheating (electricity) , thermodynamics , adiabatic process , thermalisation , heat transfer , thermal , compressibility , mechanics , physics , quantum mechanics

We present an experimental study of the thermal response to a positive temperature quench in two-phase fluid SF6 in low gravity for temperature ranging from 10.1 to 0.1 K from the critical temperature. The temperature was measured simultaneously in the gas, the liquid, and the cell wall by thermistors and the density distribution was observed by interferometry. During the quench the gas temperature considerably exceeded the temperature of the heating walls (overheating up to 23%). This striking observation is discussed in the light of the adiabatic heat transfer in this highly compressible fluid while the key role of the localization in low gravity of the gas and liquid phases is revealed.

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