Results 41 to 50 of about 346,423 (337)

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

open access: yesAlexandria 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   +3 more
doaj   +1 more source

Generalized $$\alpha $$-observational entropy

open access: yesQuantum Information Processing
Comment: 13 pages: Accepted for Publication in Quantum Information ...
Sinha, Shivam   +2 more
openaire   +2 more sources

Holographic Rényi entropy and generalized entropy method

open access: yesNuclear Physics B, 2014
In this paper we use the method of generalized gravitational entropy in \cite{Lewkowycz:2013nqa} to construct the dual bulk geometry for a spherical entangling surface, and calculate the R nyi entropy with the dual bulk gravity theory being either Einstein gravity or Lovelock gravity, this approach is closely related to that in \cite{Casini:2011kv ...
Guo, Wu-zhong, Li, Miao
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

open access: yesAdvanced 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

open access: yesEntropy, 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   +2 more
doaj   +1 more source

Generalized Entropy Generation Expressions in Gases [PDF]

open access: yesEntropy, 2019
In this study, we generalize our previous methods for obtaining entropy generation in gases without the need to carry through a specific expansion method, such as the Chapman–Enskog method. The generalization, which is based on a scaling analysis, allows for the study of entropy generation in gases for any arbitrary state of the gas and consistently ...
openaire   +3 more sources

Simulation of Entropy Generation under Stall Conditions in a Centrifugal Fan

open access: yesEntropy, 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   +3 more
doaj   +1 more source

Dynamical study of spinodal decomposition in heavy ion collisions

open access: yes, 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

Generation of entropy and forced convection of heat in a conduit partially filled with porous media- Local thermal non-equilibrium and exothermicity effects applied thermal engineering [PDF]

open access: yes, 2016
The performance of a two-dimensional, axisymmetric channel with porous inserts attached to the walls is analyzed from the perspective of the first and second laws of thermodynamics.
Karimi, Nader   +3 more
core   +1 more source

Generalized quantum entropies [PDF]

open access: yesPhysics Letters A, 2011
يتم اشتقاق خصم الإنتروبيا الكمومية المعممة داخل أطر تساليس وكانياداكيس باستخدام تعميم المعامل متعدد الحدود العادي. يعتمد هذا التعميم على الضرب والقسمة المشوهة المعنية. نظهر أن الانتروبيا المذكورة أعلاه تتسق مع تلك المفترضة بشكل تعسفي في سياقات أخرى.
Adriana Paula Batista dos Santos   +3 more
openaire   +2 more sources

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