Continuous non-equilibrium transition driven by the heat flow
| Autor: | Zhang, Yirui, Litniewski, Marek, Makuch, Karol, Zuk, Pawel J., Maciolek, Anna, Holyst, Robert |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Phys. Rev. E 104, 024102 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevE.104.024102 |
| Popis: | We discovered an out-of-equilibrium transition in the ideal gas between two walls, divided by an inner, adiabatic, movable wall. The system is driven out-of-equilibrium by supplying energy directly into the volume of the gas. At critical heat flux, we have found a continuous transition to the state with a low-density, hot gas on one side of the movable wall and a dense, cold gas on the other side. Molecular dynamic simulations of the soft-sphere fluid confirm the existence of the transition in the interacting system. We introduce a stationary state Helmholtz-like function whose minimum determines the stable positions of the internal wall. This transition can be used as a paradigm of transitions in stationary states and the Helmholtz-like function as a paradigm of the thermodynamic description of these states. Comment: 8 pages, 6 figures; paragraph one rewritten; comments added regarding maxEP, and figures 4, 5 and 6 are added; references added and typos corrected |
| Databáze: | arXiv |
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