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Entropy Production In Thermodynamic Climate Models

We present a non-equilibrium theory in a system with heat and radiative fluxes. The obtained expression for the entropy production is applied to a simple one-dimensional climate model based on the first law of thermodynamics. In the model, the dissipative fluxes are assumed to be independent variables, following the criteria of the Extended Irreversible Thermodynamics (BIT) that enlarges, in reference to the classical expression, the applicability of a macroscopic thermodynamic theory for systems far from equilibrium. We analyze the second differential of the classical and the generalized entropy as a criteria of stability of the steady states. Finally, the extreme state is obtained using variational techniques and observing that the system is close to the maximum dissipation rate

漏 Journal of Non-Equilibrium Thermodynamics, 1998, vol. 23, n煤m.1, p. 62-86

Walter de Gruyter

Author: Pujol i Sagar贸, Toni
Llebot, Josep Enric
Date: 1998
Abstract: We present a non-equilibrium theory in a system with heat and radiative fluxes. The obtained expression for the entropy production is applied to a simple one-dimensional climate model based on the first law of thermodynamics. In the model, the dissipative fluxes are assumed to be independent variables, following the criteria of the Extended Irreversible Thermodynamics (BIT) that enlarges, in reference to the classical expression, the applicability of a macroscopic thermodynamic theory for systems far from equilibrium. We analyze the second differential of the classical and the generalized entropy as a criteria of stability of the steady states. Finally, the extreme state is obtained using variational techniques and observing that the system is close to the maximum dissipation rate
Format: application/pdf
ISSN: 0340-0204 (versi贸 paper)
1437-4358 (versi贸 electr貌nica)
Document access: http://hdl.handle.net/10256/8488
Language: eng
Publisher: Walter de Gruyter
Collection: Reproducci贸 digital del document publicat a: http://dx.doi.org/10.1515/jnet.1998.23.1.62
Articles publicats (D-F)
Is part of: 漏 Journal of Non-Equilibrium Thermodynamics, 1998, vol. 23, n煤m.1, p. 62-86
Rights: Tots els drets reservats
Subject: Entropia
Entropy
Termodin脿mica del desequilibri
Nonequilibrium thermodynamics
Title: Entropy Production In Thermodynamic Climate Models
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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