Results 31 to 40 of about 25,533 (260)

Entropy Principle and Recent Results in Non-Equilibrium Theories

open access: yesEntropy, 2014
We present the state of the art on the modern mathematical methods of exploiting the entropy principle in thermomechanics of continuous media. A survey of recent results and conceptual discussions of this topic in some well-known non-equilibrium theories
Vito Antonio Cimmelli   +3 more
doaj   +1 more source

Incremental least action principle in the framework of thermodynamics of irreversible processes

open access: yesPhysical Review Research, 2020
In this paper, an incremental least action principle is proposed using the framework of the thermodynamics of irreversible processes. First, we establish that an extensive thermodynamic potential defined over an infinitesimal volume satisfies a ...
V. Magnenet, J. Schmittbuhl
doaj   +1 more source

Stability Analysis of a Self-Gravitating Fluid within EIT Theory

open access: yesUniverse, 2023
In this article, we apply the formalism of (classical) Extended Irreversible Thermodynamics (EIT) to the dynamics of density fluctuations for a self-gravitating fluid in a static Universe, considering only bulk viscosity.
J. Félix Salazar   +3 more
doaj   +1 more source

Thermodynamically consistent generalized hydrodynamic theory of thermal conduction and integral equations of thermal conductivity of simple fluids in electromagnetic fields

open access: yesAIP Advances, 2021
We have reviewed thermodynamically consistent evolution equations of fluids in an invited review article in the McGill University bicentennial memorial issue [B. C. Eu, Can. J. Chem. (in press) (2021)].
Byung Eu
doaj   +1 more source

Cosmic “adiabatic” photon creation: Temperature law and blackbody spectrum

open access: yesPhysics Letters B, 2021
The temperature-redshift relation (cosmic thermometer) is rediscussed in the framework of gravitationally induced photon production in the expanding universe.
J.A.S. Lima   +2 more
doaj   +1 more source

Comprehensive Criteria for the Extrema in Entropy Production Rate for Heat Transfer in the Linear Region of Extended Thermodynamics Framework

open access: yesAxioms, 2020
In this work comprehensive criteria for detecting the extrema in entropy production rate for heat transfer by conduction in a uniform body under a constant volume in the linear region of Extended Thermodynamics Framework are developed. These criteria are
George D. Verros
doaj   +1 more source

Entropic Constitutive Relation and Modeling for Fourier and Hyperbolic Heat Conductions

open access: yesEntropy, 2017
Most existing phenomenological heat conduction models are expressed by temperature and heat flux distributions, whose definitions might be debatable in heat conductions with strong non-equilibrium.
Shu-Nan Li, Bing-Yang Cao
doaj   +1 more source

Thermodynamics of semiconductors with impurities

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2008
In this paper we construct a geometric model for the thermodynamics of semiconductors with impurities, using a nonconventional model based on the extended irreversible thermodynamics with internal variables. For this purpose, we derive the transformation
Restuccia, Liliana, Mazzeo, Maria Paola
doaj   +1 more source

On Thermodynamics Problems in the Single-Phase-Lagging Heat Conduction Model

open access: yesEntropy, 2016
Thermodynamics problems for the single-phase-lagging (SPL) model have not been much studied. In this paper, the violation of the second law of thermodynamics by the SPL model is studied from two perspectives, which are the negative entropy production ...
Shu-Nan Li, Bing-Yang Cao
doaj   +1 more source

On Entropic Framework Based on Standard and Fractional Phonon Boltzmann Transport Equations

open access: yesEntropy, 2019
Generalized expressions of the entropy and related concepts in non-Fourier heat conduction have attracted increasing attention in recent years. Based on standard and fractional phonon Boltzmann transport equations (BTEs), we study entropic functionals ...
Shu-Nan Li, Bing-Yang Cao
doaj   +1 more source

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