Results 21 to 30 of about 344,577 (190)

Entropy Generation Rates in Two-Dimensional Rayleigh–Taylor Turbulence Mixing

Entropy, 2018
Entropy generation rates in two-dimensional Rayleigh–Taylor (RT) turbulence mixing are investigated by numerical calculation. We mainly focus on the behavior of thermal entropy generation and viscous entropy generation of global quantities with ...
Xinyu Yang, Haijiang He, Jun Xu, Yikun Wei, Hua Zhang   +4 more
doaj   +1 more source

Numerical studies for effect of geometrical parameters on water jet pump performance via entropy generation analysis

Journal of Mechanical Engineering and Sciences, 2023
This paper presented an implementation of entropy generation analysis in the main flow field of a water jet pump via the CFD method. This study aimed to identify the inefficient location of energy conversion and to analyse entropy generation sources in ...
Muhammad Penta Helios, Wanchai Asvapoositkul   +1 more
doaj   +1 more source

Teaching Fluid Mechanics and Thermodynamics Simultaneously through Pipeline Flow Experiments

Fluids, 2019
Entropy and entropy generation are abstract and illusive concepts for undergraduate students. In general, students find it difficult to visualize entropy generation in real (irreversible) processes, especially at a mechanistic level.
Rajinder Pal
doaj   +1 more source

Entropies for complex systems: generalized-generalized entropies

AIP Conference Proceedings, 2007
CTNEXT 07, no ...
Stefan Thurner, Rudolf Hanel, Sumiyoshi Abe, Hans Herrmann, Piero Quarati, Andrea Rapisarda, Constantino Tsallis   +6 more
openaire   +2 more sources

Entropy Generation during Turbulent Flow of Zirconia-water and Other Nanofluids in a Square Cross Section Tube with a Constant Heat Flux

Entropy, 2014
The entropy generation based on the second law of thermodynamics is investigated for turbulent forced convection flow of ZrO2-water nanofluid through a square pipe with constant wall heat flux.
Hooman Yarmand, Goodarz Ahmadi, Samira Gharehkhani, Salim Newaz Kazi, Mohammad Reza Safaei, Maryam Sadat Alehashem, Abu Bakar Mahat   +6 more
doaj   +1 more source

Entropy characterisation of overstressed capacitors for lifetime prediction [PDF]

, 2016
We propose a method to monitor the ageing and damage of capacitors based on their irreversible entropy generation rate. We overstressed several electrolytic capacitors in the range of 33 µF–100 µF and monitored their entropy generation rate View the ...
Cuadras Tomàs, Àngel, Ovejas Benedicto, Victòria Júlia, Romero, Ramón   +2 more
core   +2 more sources

Effect of non-uniform temperature distribution on entropy generation and enthalpy for the laminar developing pipe flow of a high Prandtl number fluid [PDF]

Chemical Review and Letters, 2019
In this article, Entropy generation and enthalpy are investigated on the pipe wall in developed laminar flow for 7 cases. Variation of entropy generation and enthalpy are shown along the radius.
Reza Kakulvand
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

Entropy generation in a model of reversible computation [PDF]

, 2006
We present a model in which, due to the quantum nature of the signals controlling the implementation time of successive unitary computational steps, \emph{physical} irreversibility appears in the execution of a \emph{logically} reversible computation ...
Apolloni, Dario Tamascelli, de Falco, de Falco, Diego de Falco, Feynman, Gambini, Peres, Salecker   +8 more
core   +2 more sources

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