Showing 1 - 10 of 20
Previous thermodynamic analyses of shear-induced shift of the spinodal line in diluted polymer solutions in plane Couette flows are extended here to the entangled regime by using the reptation model. The most significant difference with respect to the dilute regime is a shift of the critical...
Persistent link: https://www.econbiz.de/10011058744
The expressions for the nonequilibrium temperature derived from the fluctuation–dissipation theorem and from the differential of the informational nonequilibrium entropy for ideal gases under shear flow are compared. Both temperatures are different, in particular, the thermodynamic temperature...
Persistent link: https://www.econbiz.de/10011058862
It is shown that the identification of the Lagrange multiplier conjugated to the viscous pressure tensor that was proposed in a previous paper [Physica A 233 (1996) 163–174] on information theory applied to fluids under flow yields for the orientational distribution function of dilute dumbbell...
Persistent link: https://www.econbiz.de/10011064610
The maximum-entropy formalism is used here as a basis of a thermodynamic description of ideal gases under shear. We have obtained expressions for the entropy and the equations of state in nonequilibrium steady states characterized by a given shear viscous pressure and have identified in physical...
Persistent link: https://www.econbiz.de/10010587381
Giving continuation to the study of the thermodynamics of nonequilibrium radiation presented in the preceding article [Physica A 300 (2001) 386], we derive the evolution in time of its macroscopic nonequilibrium state. The case of a semiconductor sample and the coupling of radiation and...
Persistent link: https://www.econbiz.de/10010872612
A study is performed on the time correlation function for the equilibrium fluctuations of the longitudinal velocity in a compressible, heat insulating fluid, within the context of extended irreversible thermodynamics. The memory function is explicitly computed and shown to obey a double...
Persistent link: https://www.econbiz.de/10011057945
Heat and electric conduction in a rigid solid is investigated in the framework of extended irreversible thermodynamics. This allows us to apply directly the original procedure of Onsager to the analysis of the reciprocal relations. A non-local constitutive equation for the heat flux previously...
Persistent link: https://www.econbiz.de/10011058415
In this paper, we use a non-equilibrium thermodynamic framework to generalize a previous nonlocal model of counterflow superfluid turbulence to incorporate some new coupled terms which may be relevant in the evolution of inhomogeneous vortex tangles. The theory chooses as fundamental fields the...
Persistent link: https://www.econbiz.de/10011064048
An important problem in thermodynamics is the link between the entropy flux and the heat flux, for phenomena far from equilibrium. As an illustration we consider here the case of a rigid heat conductor subject to heating. The expression of the entropy flux is determined by the expressions of the...
Persistent link: https://www.econbiz.de/10011064384
Starting from the generalized Gibbs equation of extended irreversible thermodynamics, we define a thermodynamic potential that provides a suitable description of the fluctuations of the hydrodynamical dissipative fluxes when it is used in an expression analogous to the classical Einstein formula...
Persistent link: https://www.econbiz.de/10010584720