Thermal hysteresis in liquid solid can be defined by undercooling. I am looking into thermal hysteresis in gas liquid phase transition.. is that possible? I cant seem to find any literature on this
There are few research groups who have studied this phenomena, however they have only developed a theoretical framework. The bulk phenomenas of boiling and condensation with and without this liquid-vapour phase transition hysteresis model can be a better example to test.
Article Diffuse interface modeling of liquid–vapor phase transition ...
According to the theory of van der Waals, the vapor-liquid transition can be either of the first order with hysteresis or of the second order without hysteresis. It all depends on the pressure at which this transition occurs. I recommend doing a search for the words "van der Waals isotherms." I believe that your question will receive a comprehensive answer.
Thanks! for the insight. Also, if i am looking at gas solid i am guessing its same as gas liquid, undercooling? Am i correct In this assumption?
The solid-gas and solid-liquid transitions are always first-order transitions and have thermal hysteresis. This is due to the fact that gas and liquid do not possess symmetry in the arrangement of atoms or molecules, while crystalline solids possess such symmetry. Amorphous bodies are liquids, although they are hard and can be fragile. But the symmetry of the arrangement of atoms or molecules do not possess. Therefore, they are liquids. Therefore, the amorphous body – gas transition can be a second-order transition without hysteresis.
Dear Saurav,
Thermal hysteresis is possible.
Monte Carlo simulations, primarily the grand canonical (GCMC) and Gibbs ensemble (GEMC) methods, were successfully employed earlier to explain the specifics of liquid-vapor transitions,liquidliquid equilibrium, and freezing in pores of a few molecular diameters in width. pore size, metastable vapor like states can be monitored experimentally and condensation may occur irreversibly as the spontaneous transition from a metastable state to a stable state, giving rise to the hysteresis.
The transient regime of developing hysteresis takes place when spontaneous condensation occurs within an appreciable distance from the spinodal, so that the experimental hysteresis loop is narrower than the theoretical one limited by the spinodal.
Reference:
Neimark, A. V.; Ravikovitch, P. I.; Vishnyakov, A. Phys. ReV. E 2000, 62, R1493.
Ashish
Dear Sourav Chakravarty,
Thermal hysteresis in gas liquid phase transition is possible,
It can be explained with some isotherms resulted by extrapolation of the vander Waals equation of state into the two-phase region.
Reference:
I. Jancskar et al. / Physica B 403 (2008) 505–508
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