Results 31 to 40 of about 227,316 (342)

A Novel Derivation of the Time Evolution of the Entropy for Macroscopic Systems in Thermal Non-Equilibrium

open access: yesEntropy, 2017
The paper discusses how the two thermodynamic properties, energy (U) and exergy (E), can be used to solve the problem of quantifying the entropy of non-equilibrium systems.
Enrico Sciubba, Federico Zullo
doaj   +1 more source

Thermodynamic potentials and Thermodynamic Relations in Nonextensive Thermodynamics [PDF]

open access: yesPhysica A 390(2011)183, 2010
The generalized Gibbs free energy and enthalpy is derived in the framework of nonextensive thermodynamics by using the so-called physical temperature and the physical pressure. Some thermodynamical relations are studied by considering the difference between the physical temperature and the inverse of Lagrange multiplier.
arxiv   +1 more source

Exergy Dynamics of Systems in Thermal or Concentration Non-Equilibrium

open access: yesEntropy, 2017
The paper addresses the problem of the existence and quantification of the exergy of non-equilibrium systems. Assuming that both energy and exergy are a priori concepts, the Gibbs “available energy” A is calculated for arbitrary temperature or ...
Enrico Sciubba, Federico Zullo
doaj   +1 more source

Inertial effects in non-equilibrium thermodynamics [PDF]

open access: yesPhysica A: Statistical Mechanics and its Applications, 1999
8 pages, Revtex (no Figures)
Agustín Pérez-Madrid, J. M. Rubi
openaire   +3 more sources

Non-equilibrium thermodynamics of concentration polarization [PDF]

open access: yesAdvances in Colloid and Interface Science, 2001
Ultrafiltration is a membrane separation process with many applications, including the treatment of industrial wastes and the processing of milk and juices. Academics are also interested in ultrafiltration as a possible tool for measuring empirical coefficients such as the diffusion coefficient and the permeability.
Peppin, S, Elliott, J
openaire   +4 more sources

Thermodynamics of exponential Kolmogorov–Nagumo averages

open access: yesNew Journal of Physics, 2023
This paper investigates generalized thermodynamic relationships in physical systems where relevant macroscopic variables are determined by the exponential Kolmogorov–Nagumo average.
Pablo A Morales   +2 more
doaj   +1 more source

Local equilibrium and the second law of thermodynamics for irreversible systems with thermodynamic inertia [PDF]

open access: yes, 2015
Validity of local equilibrium has been questioned for non-equilibrium systems which are characterized by delayed response. In particular, for systems with non-zero thermodynamic inertia, the assumption of local equilibrium leads to negative values of the
Glavatskiy, K. S.
core   +2 more sources

Measuring thermodynamic length [PDF]

open access: yesPhys. Rev. Lett. 99 100602 (2007), 2007
Thermodynamic length is a metric distance between equilibrium thermodynamic states. Among other interesting properties, this metric asymptotically bounds the dissipation induced by a finite time transformation of a thermodynamic system. It is also connected to the Jensen-Shannon divergence, Fisher information and Rao's entropy differential metric ...
arxiv   +1 more source

Thermodynamics and Rate Thermodynamics [PDF]

open access: yesarXiv, 2023
Approach of mesoscopic state variables to time independent equilibrium sates (zero law of thermodynamics) gives birth to the classical equilibrium thermodynamics. Approach of fluxes and forces to fixed points (equilibrium fluxes and forces) that drive reduced mesoscopic dynamics gives birth to the rate thermodynamics that is applicable to driven ...
arxiv  

Extended irreversible thermodynamics and non-equilibrium temperature

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2008
We briefly review the concept of non-equilibrium temperature from the perspectives of extended irreversible thermodynamics, fluctuation theory, and statistical mechanics. The relations between different proposals are explicitly examined in two especially
Casas-Vazquez, Jose', Jou, David
doaj   +1 more source

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