Results 31 to 40 of about 341,588 (339)

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

A thermodynamic analysis of forced convection through porous media using pore scale modeling [PDF]

, 2016
The flow thorough porous media is analyzed from a thermodynamic perspective, with a particular focus on the entropy generation inside the porous media, using a pore scale modeling approach.
Karimi, Nader, Peterson, G.P., Torabi, Mehrdad, Torabi, Mohsen   +3 more
core   +1 more source

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

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

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

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

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

Entropy Generation Due to Laminar Incompressible Forced Convection Flow Through Parallel-Plates Microchannel

Entropy, 2004
: The entropy generation due to steady laminar forced convection fluid flow through parallel plates microchannel is investigated numerically. The effect of Knudsen, Reynolds, Prandtl, Eckert numbers and the nondimensional temperature difference on ...
Mohammad Al-Nimr, Mohammad Abuzaid, Osamah Haddad   +2 more
doaj   +1 more source

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