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Extremal principles in non-equilibrium thermodynamics — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Extremal_principles_in_non-equilibrium_thermodynamics
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Archived: 2026-10-31T08:59:19.698Z
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Extremal principles in non-equilibrium thermodynamics — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Extremal_principles_in_non-equilibrium_thermodynamics (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_242ffdbbf429 (Metraipolis archive dc_242ffdbbf429, sha256 2a3a8ff3dfc15ecf22697db9adfe87e4986526acc40d8aad8a671380029c4db9)

BibTeX

@misc{dc242ffdbbf429,
  title = {Extremal principles in non-equilibrium thermodynamics — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Extremal_principles_in_non-equilibrium_thermodynamics},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_242ffdbbf429; sha256 2a3a8ff3dfc15ecf22697db9adfe87e4986526acc40d8aad8a671380029c4db9},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Extremal_principles_in_non-equilibrium_thermodynamics. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Energy dissipation and entropy production extremal principles are ideas developed within non-equilibrium thermodynamics that attempt to predict the likely steady states and dynamical structures that a physical system might show. The search for extremum principles for non-equilibrium thermodynamics follows their successful use in other branches of physics. According to Kondepudi (2008), and to Grandy (2008), there is no general rule that provides an extremum principle that governs the evolution of a far-from-equilibrium system to a steady state. According to Glansdorff and Prigogine (1971, page 16), irreversible processes usually are not governed by global extremal principles because description of their evolution requires differential equations which are not self-adjoint, but local extremal principles can be used for local solutions. Lebon Jou and Casas-Vásquez (2008) state that "In non-equilibrium ... it is generally not possible to construct thermodynamic potentials depending on the whole set of variables". Šilhavý (1997) offers the opinion that "... the extremum principles of thermodynamics ... do not have any counterpart for [non-equilibrium] steady states (despite many claims in the literature)." It follows that any general extremal principle for a non-equilibrium problem will need to refer in some detail to the constraints that are specific for the structure of the system considered in the problem.

Tema degli esploratori: fisica e astronomia (deposito sistematico; ricerca «thermodynamics»).
Fonte: Wikipedia in inglese, voce «Extremal principles in non-equilibrium thermodynamics» — https://en.wikipedia.org/wiki/Extremal_principles_in_non-equilibrium_thermodynamics
Wikidata Q5422301 (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q5422301
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Extremal_principles_in_non-equilibrium_thermodynamics?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1381367633, consultata il 2026-10-31T08:48:49.320Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 2b66cee81122cff6fceb7a091ca7d6e392c572d30a6397af0d2061c7a98c4cad