Internal variables in the local-equilibrium approximation
type: Item
instance of: scholarly article
title: Internal variables in the local-equilibrium approximation
zbMATH Open document ID: 0807.73007
published in: Journal of Non-Equilibrium Thermodynamics
publication date: 1995-03-01T00:00:00Z
full work available at URL: metadc1384644
review text: The author introduces in this, one of his last papers, two classes of variables: (a) Extensive variables which can have values in non- equilibrium. They are represented in a Gibbs phase space. (b) Intensive variables which ``appear in physical space''. Now entropy and temperature in physical space \((\bar S,\bar T)\) are approximated by the values of \(S\) and \(T\) in Gibbsian phase space by what the author calls ``the principle of the local state''. The trick is to formulate the Gibbs equation for the reversible process ``accompanying'' in phase space the process of interest, and hence to get a grip on the entropy production. A short quote from Bridgman's ``Nature of Thermodynamics'' (1941, 1961) does unfortunately not carry the appropriate page number.
Mathematics Subject Classification ID: 74A15
Mathematics Subject Classification ID: 80A05
Mathematics Subject Classification ID: 82D15
Mathematics Subject Classification ID: 82D20
zbMATH DE Number: 519553
zbMATH Keywords: extensive variables
zbMATH Keywords: intensive variables
zbMATH Keywords: Gibbs phase space
zbMATH Keywords: principle of the local state
zbMATH Keywords: Gibbs equation
author: Joseph Kestin
reviewed by: Peter T. Landsberg
MaRDI profile type: Publication
OpenAlex ID: W2007251187
DOI: 10.1515/JNET.1993.18.4.360
description: scientific article; zbMATH DE number 519553