Results 41 to 50 of about 282,227 (322)

Entropy Production in Stochastics

open access: yesEntropy, 2017
While the modern definition of entropy is genuinely probabilistic, in entropy production the classical thermodynamic definition, as in heat transfer, is typically used.
Demetris Koutsoyiannis
doaj   +1 more source

Entropy Production of Stars

open access: yesEntropy, 2015
The entropy production (inside the volume bounded by a photosphere) of main-sequence stars, subgiants, giants, and supergiants is calculated based on B–V photometry data. A non-linear inverse relationship of thermodynamic fluxes and forces as well as an
Leonid M. Martyushev, Sergey N. Zubarev
doaj   +1 more source

Quantifying the thermodynamic entropy budget of the land surface: is this useful? [PDF]

open access: yesEarth System Dynamics, 2011
As a system is moved away from a state of thermodynamic equilibrium, spatial and temporal heterogeneity is induced. A possible methodology to assess these impacts is to examine the thermodynamic entropy budget and assess the role of entropy production ...
N. A. Brunsell   +2 more
doaj   +1 more source

Analysis of Hydraulic Losses in Vortex Rope Inside the Draft Tube of Francis Pump-Turbine Based on Entropy Production Theory

open access: yesMachines, 2023
The existence of vortex ropes inside the draft tube significantly impacts hydraulic efficiency and operational stability, and few studies on the formation mechanism of vortex ropes and hydraulic loss problems have been explored.
Haobo Wang   +3 more
doaj   +1 more source

A Relativistic Entropic Hamiltonian–Lagrangian Approach to the Entropy Production of Spiral Galaxies in Hyperbolic Spacetime

open access: yesUniverse, 2021
Double-spiral galaxies are common in the Universe. It is known that the logarithmic double spiral is a Maximum Entropy geometry in hyperbolic (flat) spacetime that well represents an idealised spiral galaxy, with its central supermassive black hole (SMBH)
Michael C. Parker, Chris Jeynes
doaj   +1 more source

Geometrical aspects of entropy production in stochastic thermodynamics based on Wasserstein distance

open access: yesPhysical Review Research, 2021
We study a relationship between optimal transport theory and stochastic thermodynamics for the Fokker-Planck equation. We show that the lower bound on the entropy production is the action measured by the path length of the L^{2}-Wasserstein distance ...
Muka Nakazato, Sosuke Ito
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

Physicochemical attack against solid tumors based on the reversal of direction of entropy flow: an attempt to introduce thermodynamics in anticancer therapy

open access: yesDiagnostic Pathology, 2006
Background There are many differences between healthy tissue and growing tumor tissue, including metabolic, structural and thermodynamic differences. Both structural and thermodynamic differences can be used to follow the entropy differences in cancerous
Lv Xiaogui   +4 more
doaj   +1 more source

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

Entropy Production in Exactly Solvable Systems

open access: yesEntropy, 2020
The rate of entropy production by a stochastic process quantifies how far it is from thermodynamic equilibrium. Equivalently, entropy production captures the degree to which global detailed balance and time-reversal symmetry are broken.
Luca Cocconi   +4 more
doaj   +1 more source

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