Results 31 to 40 of about 6,301,476 (296)
Machines, 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
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Universe, 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
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Diagnostic 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
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Geometrical aspects of entropy production in stochastic thermodynamics based on Wasserstein distance
Physical 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
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Entropy Production and the Maximum Entropy of the Universe [PDF]
The 5th International Electronic Conference on Entropy and Its Applications, 2019 The entropy of the observable universe has been calculated as Suni ~ 10104 k and is dominated by the entropy of supermassive black holes. Irreversible processes in the universe can only happen if there is an entropy gap ΔS between the entropy of the observable universe Suni and its maximum entropy Smax: ΔS = Smax − Suni.
Vihan M. Patel, Charles Lineweaver
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Entropy production in affine inflation [PDF]
Physical 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
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Generalization of Prigogine’s theorem for the case of full differential of entropy
MethodsX, 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
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Entropy and Entropy Production in Multiscale Dynamics [PDF]
Journal 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
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Frontiers 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
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Frenetic Bounds on the Entropy Production [PDF]
Physical Review Letters, 2017 revised ...
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