On the relationship between extended thermodynamics and the wave approach to thermodynamics
A comparative analysis of two formulations of nonlinear irreversible processes is performed. We first disclose the difference between the well known Onsager-Machlup linear theory and the wave approach to thermodynamics (WAT) introduced by \textit{I. Gyarmati} [ibid. 2, 233-260 (1977; Zbl 0366.73002)]. We then discuss the essential content of the goal and postulates of extended irreversible thermodynamics (EIT) and compare them with those of WAT. From this comparison the differences, scope and limitations of each theory follow and the precise special conditions under which both theories yield similar results are identified. Finally, the more general type of constitutive equations that EIT can yield is illustrated by studying the behaviour of a nonlinear heat conductor.
two formulations of nonlinear irreversible processes
scientific article; zbMATH DE number 4058945