Results 31 to 40 of about 346,423 (337)

Experimental and support vector machine predictions of entropy generations and exergy efficiency of Fe3O4–SiO2/Water hybrid nanofluid in a plate heat exchanger

Heliyon, 2023
Several experiments of Fe3O4–SiO2/water hybrid nanofluids with volumetric concentrations ranging from 0.2 % to 1.0 % circulating in the cold-side of a plate heat exchanger at flow rates ranging from 0.05 kg/s to 0.1166 kg/s are performed.
A.M. Alklaibi, Kotturu V.V. Chandra Mouli, L. Syam Sundar   +2 more
doaj   +1 more source

Performance analysis of micro-fin tubes compared to smooth tubes as a heat transfer enhancement technique for flow condensation

Energy Nexus, 2022
Heat transfer enhancement techniques are accompanied by pressure drop amplification, detrimentally affecting their performance; entropy generation analysis is an effective approach to assess heat transfer enhancement along with resulting pressure drop ...
Shahriyar Ghazanfari Holagh, Mohammad Ali Abdous, Hamidreza Rastan, Mahmood Shafiee, Mehran Hashemian   +4 more
doaj   +1 more source

Statistical Mechanics of Charged Black Holes in Induced Einstein-Maxwell Gravity [PDF]

, 1999
The statistical origin of the entropy of charged black holes in models of induced Einstein-Maxwell gravity is investigated. The constituents inducing the Einstein-Maxwell action are charged and interact with an external gauge potential. This new feature,
A. D. Sakharov, A. Strominger, B. S. DeWitt, D. V. Fursaev, D. V. Fursaev, D. V. Fursaev, G. Clément, J. D. Brown, J. Maldacena, J. W. York, L. Abbott, M. Bañados, S. W. Hawking, V. Frolov, V. Iyer, V. P. Frolov, V. P. Frolov, V. P. Frolov, V. P. Frolov, V. P. Frolov   +19 more
core   +3 more sources

Performance optimization of centrifugal pump based on particle swarm optimization and entropy generation theory

Frontiers in Energy Research, 2023
Centrifugal pumps are frequently utilized in general machinery, but they have issues with low efficiency, unstable operation, and high-power consumption in actual engineering, making performance improvements necessary.
Handong Qi, Wei Li, Wei Li, Leilei Ji, Leilei Ji, Leilei Ji, Mingjiang Liu, Rui Song, Yunxin Pan, Yi Yang   +9 more
doaj   +1 more source

Optimal Design of Nanoparticle Enhanced Phan-Thien–Tanner Flow of a Viscoelastic Fluid in a Microchannel

Entropy, 2018
The excellent thermal characteristics of nanoparticles have increased their application in the field of heat transfer. In this paper, a thermophysical and geometrical parameter study is performed to minimize the total entropy generation of the ...
Mohammad Yaghoub Abdollahzadeh Jamalabadi
doaj   +1 more source

Zero Entropy Is Generic [PDF]

Entropy, 2016
Dan Rudolph showed that for an amenable group, Γ, the generic measure-preserving action of Γ on a Lebesgue space has zero entropy. Here, this is extended to nonamenable groups. In fact, the proof shows that every action is a factor of a zero entropy action!
openaire   +3 more sources

Generalized gravitational entropy [PDF]

Journal of High Energy Physics, 2013
26+7 pages, 8 figures.
Lewkowycz, Aitor, Maldacena, Juan
openaire   +3 more sources

On Generalized Schürmann Entropy Estimators

Entropy, 2022
We present a new class of estimators of Shannon entropy for severely undersampled discrete distributions. It is based on a generalization of an estimator proposed by T. Schürmann, which itself is a generalization of an estimator proposed by myself.For a special set of parameters, they are completely free of bias and have a finite variance, something ...
openaire   +5 more sources

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

Progress in the Prediction of Entropy Generation in Turbulent Reacting Flows Using Large Eddy Simulation

Entropy, 2014
An overview is presented of the recent developments in the application of large eddy simulation (LES) for prediction and analysis of local entropy generation in turbulent reacting flows.
Mehdi Safari, Fatemeh Hadi, M. Reza H. Sheikhi   +2 more
doaj   +1 more source