Jump to main content
Jump to site search

Issue 26, 2017
Previous Article Next Article

Linear nonequilibrium thermodynamics of reversible periodic processes and chemical oscillations

Author affiliations

Abstract

Onsager's phenomenological equations successfully describe irreversible thermodynamic processes. They assume a symmetric coupling matrix between thermodynamic fluxes and forces. It is easily shown that the antisymmetric part of a coupling matrix does not contribute to dissipation. Therefore, entropy production is exclusively governed by the symmetric matrix even in the presence of antisymmetric terms. In this paper we focus on the antisymmetric contributions which describe isentropic oscillations with well-defined equations of motion. The formalism contains variables that are equivalent to momenta and coefficients that are analogous to inertial mass. We apply this formalism to simple problems with known answers such as an oscillating piston containing an ideal gas, and oscillations in an LC-circuit. One can extend this formalism to other pairs of variables, including chemical systems with oscillations. In isentropic thermodynamic systems all extensive and intensive variables including temperature can display oscillations reminiscent of adiabatic waves.

Graphical abstract: Linear nonequilibrium thermodynamics of reversible periodic processes and chemical oscillations

Back to tab navigation

Article information


Submitted
05 Apr 2017
Accepted
12 Jun 2017
First published
20 Jun 2017

Phys. Chem. Chem. Phys., 2017,19, 17331-17341
Article type
Paper

Linear nonequilibrium thermodynamics of reversible periodic processes and chemical oscillations

T. Heimburg, Phys. Chem. Chem. Phys., 2017, 19, 17331
DOI: 10.1039/C7CP02189E

Social activity

Search articles by author

Spotlight

Advertisements