Liquid-gas transitions in steady heat conduction

Naoko Nakagawa, Shin-ichi Sasa

Published 2017-07-24Version 1

We study liquid-gas transitions of heat conduction systems in contact with two heat baths under constant pressure in the linear response regime. On the basis of local equilibrium thermodynamics, we derive an equality with a global temperature, which determines the volume near the liquid-gas transition in equilibrium. We find that the formulation of the liquid-gas interface is accompanied by discontinuous change in the volume when increasing the mean temperature of the baths. A super-cooled gas near the interface is observed as a stable steady state.