Continuous non-equilibrium transition driven by the heat flow
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arXiv
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| Format: | Preprint |
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2021
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| _version_ | 1866915138903212032 |
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| author | Zhang, Yirui Litniewski, Marek Makuch, Karol Zuk, Pawel J. Maciolek, Anna Holyst, Robert |
| author_facet | Zhang, Yirui Litniewski, Marek Makuch, Karol Zuk, Pawel J. Maciolek, Anna Holyst, Robert |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2103_12765 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Continuous non-equilibrium transition driven by the heat flow Zhang, Yirui Litniewski, Marek Makuch, Karol Zuk, Pawel J. Maciolek, Anna Holyst, Robert Statistical Mechanics 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. |
| title | Continuous non-equilibrium transition driven by the heat flow |
| topic | Statistical Mechanics |
| url | https://arxiv.org/abs/2103.12765 |