Results 41 to 50 of about 341,588 (339)

On entropy for general quantum systems [PDF]

Advances in Theoretical and Mathematical Physics, 2020
This version fills a gap in the proof of Theorem 4.2 as published in Adv. Theor. Math. Phys. vol. 24, 491-526, 2020, where there was a mistake in the final paragraph of the proof. This also affected the formulation of Theorem 4.5 and proof of Theorem 5.6.
Majewski, W.A., Labuschagne, L.E.
openaire   +3 more sources

Entropy generation analysis and simulation of turbulent forced convection around tube with integral wake splitter using artificial neural network approach

Alexandria Engineering Journal, 2023
This paper deals with the investigations on entropy generation around a circular plain tube with integral downstream splitter plates with cross flow of air in a rectangular duct.
Moustafa A. El Bouz, Aly M.A. Ibrahim, Mohamed M. Abdelsalam, Emad M.S. El-Said   +3 more
doaj   +1 more source

Generalized entropies and the similarity of texts [PDF]

Journal of Statistical Mechanics: Theory and Experiment, 2017
We show how generalized Gibbs-Shannon entropies can provide new insights on the statistical properties of texts. The universal distribution of word frequencies (Zipf's law) implies that the generalized entropies, computed at the word level, are dominated by words in a specific range of frequencies.
Altmann, E., Dias, L., Gerlach, M.
openaire   +3 more sources

Total entropy and exergy efficiency of graphene oxide/nanodiamond hybrid nanofluids in a mini heat sink: experimental and particle swarm optimization predictions

Advanced Engineering Letters
Through the Particle Swarm Optimization (PSO), the thermal entropy, frictional entropy, entropy generation ratio, entropy generation number, and exergy efficiency of reduced graphene oxide/nanodiamond (rGO/ND) hybrid nanofluids flow in a mini-heat sink ...
L. Syam Sundar
doaj   +1 more source

Effect of Magnetic Field on Entropy Generation in a Microchannel Heat Sink with Offset Fan Shaped

Entropy, 2015
In this study, convection flow in microchannel heat sink with offset fan-shaped reentrant cavities in sidewall filled with Fe3O4-water is numerically investigated.
Mohammad Nasiri, Mohammad Mehdi Rashidi, Giulio Lorenzini   +2 more
doaj   +1 more source

Simulation of Entropy Generation under Stall Conditions in a Centrifugal Fan

Entropy, 2014
Rotating stalls are generally the first instability met in turbomachinery, before surges. This 3D phenomenon is characterized by one or more stalled flow cells which rotate at a fraction of the impeller speed. The goal of the present work is to shed some
Lei Zhang, Jinhua Lang, Kuan Jiang, Songling Wang   +3 more
doaj   +1 more source

Dynamical study of spinodal decomposition in heavy ion collisions

, 2005
Nuclei undergo a phase transition in nuclear reactions according to a caloric curve determined by the amount of entropy. Here, the generation of entropy is studied in relation to the size of the nuclear system.Comment: 4 pages, 2 figures, Contributed ...
Barrañón, A., López, J. A.
core   +1 more source

A Direct Numerical Simulation-Based Analysis of Entropy Generation in Turbulent Premixed Flames

Entropy, 2013
A compressible single step chemistry Direct Numerical Simulation (DNS) database of freely propagating premixed flames has been used to analyze different entropy generation mechanisms.
Richard Farran, Nilanjan Chakraborty
doaj   +1 more source

Optimal behavior of viscoelastic flow at resonant frequencies

, 2004
The global entropy generation rate in the zero-mean oscillatory flow of a Maxwell fluid in a pipe is analyzed with the aim at determining its behavior at resonant flow conditions.
A. A. Lambert, A. Bejan, A. Bejan, A. Bejan, A. Bejan, A. Rey, A.C. Baytas, G. Ibáñez, J. A. del Río, J.A. del Río, N. Sun, R.H. Hoffman, S. Cuevas, S.R. Groot, S.S. Niranjan, U.H. Kurzweg   +15 more
core   +1 more source

Multi-dimensional key generation of ICMetrics for cloud computing [PDF]

, 2015
Despite the rapid expansion and uptake of cloud based services, lack of trust in the provenance of such services represents a significant inhibiting factor in the further expansion of such service.
Haciosman, Mustafa, Howells, Gareth, Wang, Frank Z., Ye, Bin   +3 more
core   +2 more sources