Results 31 to 40 of about 59,582 (255)

Generalization of Prigogine’s theorem for the case of full differential of entropy

open access: yesMethodsX, 2018
In this paper we propose a solution to the problem associated with the presence of an incomplete differential of entropy in Prigogine's theorem on the minimum of entropy production.
V.I. Shapovalov, N.V. Kazakov
doaj   +1 more source

Theoretical Analysis of Entropy Generation at the Blade Interface of a Tubular Turbine Under Cooperative Conditions

open access: yesFrontiers in Energy Research, 2021
To study the influence of the blade entropy production range on the efficiency of a tubular turbine under coassociated conditions, the renormalization group K–ε turbulence model was used to simulate the full flow passage of the tubular turbine based on ...
Zhenggui Li   +4 more
doaj   +1 more source

Entropy and Entropy Production in Multiscale Dynamics [PDF]

open access: yesJournal of Non-Equilibrium Thermodynamics, 2019
Abstract Heat conduction is investigated on three levels: equilibrium, Fourier, and Cattaneo. The Fourier level is either the point of departure for investigating the approach to equilibrium or the final stage in the investigation of the approach from the Cattaneo level.
Grmela, Miroslav   +4 more
openaire   +2 more sources

Entropy production in affine inflation [PDF]

open access: yesPhysical Review D, 2020
Multiple scalar fields nonminimally interacting through pure affine gravity are considered to generate primordial perturbations during an inflationary phase. The couplings considered give rise to two distinct sources of entropy perturbations that may not be suppressed in the long wavelength limit.
Hemza Azri, Salah Nasri
openaire   +2 more sources

Entropy Production Rates of the Climate [PDF]

open access: yesJournal of the Atmospheric Sciences, 2020
AbstractThere is ongoing interest in the global entropy production rate as a climate diagnostic and predictor, but progress has been limited by ambiguities in its definition; different conceptual boundaries of the climate system give rise to different internal production rates.
Gibbins, Goodwin, Haigh, Joanna D.
openaire   +2 more sources

Wigner Entropy Production Rate [PDF]

open access: yesPhysical Review Letters, 2017
The characterization of irreversibility in general quantum processes is an open problem of increasing technological relevance. Yet, the tools currently available to this aim are mostly limited to the assessment of dynamics induced by equilibrium environments, a situation that often does not match the reality of experiments at the microscopic and ...
Santos, Jader P.   +2 more
openaire   +3 more sources

Calculation of the Entropy Balance Equation in a Non-equilibrium Reaction-diffusion System

open access: yesEntropy, 2010
In this article, we discuss the relationships between thermodynamic quantities and the spatial pattern in a reaction-diffusion model based on the reversible Gray-Scott model.
Tomohiko Yamaguchi, Hitoshi Mahara
doaj   +1 more source

Bacterial chemotaxis and entropy production [PDF]

open access: yesPhilosophical Transactions of the Royal Society B: Biological Sciences, 2010
Entropy production is calculated for bacterial chemotaxis in the case of a migrating band of bacteria in a capillary tube. It is found that the speed of the migrating band is a decreasing function of the starting concentration of the metabolizable attractant.
Juretić, Davor   +3 more
openaire   +6 more sources

Entropy production of nonreciprocal interactions

open access: yesPhysical Review Research, 2023
Nonreciprocal interactions are present in many systems out of equilibrium. The rate of entropy production is a measure that quantifies the time irreversibility of a system, and thus how far it is from equilibrium.
Ziluo Zhang (张子洛)   +1 more
doaj   +1 more source

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