Results 1 to 10 of about 1,044 (209)

An Entropy Generation Rate Model for Tropospheric Behavior That Includes Cloud Evolution

open access: yesEntropy, 2023
A postulate that relates global warming to higher entropy generation rate demand in the tropospheric is offered and tested. This article introduces a low-complexity model to calculate the entropy generation rate required in the troposphere.
Jainagesh A. Sekhar
doaj   +3 more sources

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

open access: yesEntropy, 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   +4 more
doaj   +3 more sources

Unsteady Volumetric Entropy Generation Rate in Laminar Boundary Layers [PDF]

open access: yesEntropy, 2006
The prediction of the entropy generation rate in laminar shear layers is treated as steady, even in the presence of high levels of free stream turbulence.
D. Hernon, E. J. Walsh
doaj   +3 more sources

Entropy generation rate in a microscale thin film

open access: yesJournal of Thermal Engineering, 2019
This paper presents a new formulation of the rate of entropy generation in thin films whose thickness is of the order of the mean-free-path or less. In this relation, an expression for the gradient of the equivalent equilibrium temperature is proposed ...
Saad MANSOOR
doaj   +4 more sources

Entropy generation of nanofluid flow in a microchannel heat sink

open access: yesResults in Physics, 2018
Present study aims to investigate the effects of the presence of nano sized TiO2 particles in the base fluid on entropy generation rate in a microchannel heat sink.
Eyuphan Manay   +2 more
doaj   +3 more sources

Entropy generation rate minimization for sulfur trioxide decomposition membrane reactor

open access: yesEnergy Reports, 2022
Sulfuric acid decomposition is the critical reaction in sulfur-iodide thermochemical cycle to produce oxygen. Sulfuric acid can decompose spontaneously into sulfur trioxide (SO3) and water, and SO3 continues to decompose into oxygen and sulfur dioxide ...
Rui Kong   +4 more
doaj   +2 more sources

Effects of Convective Heating on Entropy Generation Rate in a Channel with Permeable Walls [PDF]

open access: yesEntropy, 2013
This study deals with the combined effects of convective heating and suction/injection on the entropy generation rate in a steady flow of an incompressible viscous fluid through a channel with permeable walls.
Adetayo Samuel Eegunjobi   +1 more
doaj   +2 more sources

Minimization of entropy generation rate in methanol steam reforming reactor

open access: yesCase Studies in Thermal Engineering
The methanol steam reforming (MSR) reaction is a prospective method in hydrogen generation because of its operability and high conversion efficiency. Most of the current thermodynamic studies involving MSR use classical thermodynamic methods, while fewer
Rui Kong   +3 more
doaj   +2 more sources

The Differential Entropy Generation Rate as a Unified Measure for Both the Stability and Efficiency of an Axial Compressor

open access: yesMachines, 2023
Stability and efficiency are the two most important performance indicators of highly loaded aviation axial compressors; however, they often cannot be achieved simultaneously.
Jingyuan Ma, Feng Lin
doaj   +1 more source

Entropy Generation Rate in a Chemically Reacting System [PDF]

open access: yesJournal of Energy Resources Technology, 1993
Abstract For a nonchemical-equilibrium state of an isolated system A that has r constituents with initial amounts na = {n1a, n2a, …, nra}, and that is subject to τ chemical reaction mechanisms, temperature, pressure, and chemical potentials cannot be defined.
Gyftopoulos E. P., BERETTA, Gian Paolo
openaire   +2 more sources

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