Results 31 to 40 of about 134,990 (292)

Entropy Generation During the Interaction of Thermal Radiation with a Surface

open access: yesEntropy, 2012
The entropy calculation for radiation fluxes is reviewed and applied to simple radiation-surface interactions. A plate interacting with radiation from a hot object in the zenith of the hemisphere surrounded by a colder atmosphere is analyzed in detail ...
Stephan Kabelac, Rainer Conrad
doaj   +1 more source

Entropy Minimization for Generalized Newtonian Fluid Flow between Converging and Diverging Channels

open access: yesMicromachines, 2022
The foremost focus of this article was to investigate the entropy generation in hydromagnetic flow of generalized Newtonian Carreau nanofluid through a converging and diverging channel.
Sohail Rehman   +4 more
doaj   +1 more source

Thermodynamic optimization of fluid flow over an isothermal moving plate

open access: yesAlexandria Engineering Journal, 2013
In this paper, entropy generation minimization (EGM) was employed in order to achieve a thermodynamic optimization of fluid flow and heat transfer over a flat plate.
A. Malvandi, F. Hedayati, D.D. Ganji
doaj   +1 more source

Entropy Generation Minimization for Energy-Efficient Desalination [PDF]

open access: yesVolume 6B: Energy, 2018
Desalination systems can be conceptualized as power cycles, in which the useful work output is the work of separation of fresh water from saline water. In this framing, thermodynamic analysis provides powerful tools for raising energy efficiency. This paper discusses the use of entropy generation minimization for a spectrum of desalination systems ...
openaire   +3 more sources

Impacts of Uniform Magnetic Field and Internal Heated Vertical Plate on Ferrofluid Free Convection and Entropy Generation in a Square Chamber

open access: yesEntropy, 2021
The heat transfer enhancement and fluid flow control in engineering systems can be achieved by addition of ferric oxide nanoparticles of small concentration under magnetic impact.
Chinnasamy Sivaraj   +3 more
doaj   +1 more source

ADM Solution for Cu/CuO –Water Viscoplastic Nanofluid ‎Transient Slip Flow from a Porous Stretching Sheet with Entropy ‎Generation, Convective Wall Temperature and Radiative Effects [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2021
A mathematical model is presented for entropy generation in transient hydromagnetic flow of an electroconductive magnetic Casson (non-Newtonian) nanofluid over a porous stretching sheet in a porous medium.
THIRUPATHI THUMMA   +2 more
doaj   +1 more source

Estimation of entropy generation in Carreau-Yasuda fluid flow using chemical reaction with activation energy

open access: yesJournal of Materials Research and Technology, 2020
This study investigates the characteristics of flow parameters like Brinkman number, magnetic parameter, diffusion parameter, Weissenberg number and ratio of temperature and concentration parameters for the entropy generation in reactive dissipative flow
Muhammad Ijaz Khan   +3 more
doaj   +1 more source

Entropy-information perspective to radiogenic heat distribution in continental crust [PDF]

open access: yesNonlinear Processes in Geophysics, 2013
Depth distribution of radiogenic heat sources in continental crust is an important parameter that controls its thermal structure as well as the mantle heat flow at the base of continental lithosphere.
R. N. Singh, A. Manglik
doaj   +1 more source

Entropy generation minimization in bio-convective flow of nanofluid with activation energy and gyrotactic micro-organisms

open access: yes, 2021
This article addresses the entropy generation in mixed convection magnetohydrodynamics Eyring–Powell nanofluid flow toward a permeable surface of a cylinder. The flow is modeled considering heat generation and chemical reaction aspects.
F. Haq   +4 more
semanticscholar   +1 more source

Application of Second Law Analysis in Heat Exchanger Systems

open access: yesEntropy, 2019
In recent decades, the second law of thermodynamics has been commonly applied in analyzing heat exchangers. Many researchers believe that the minimization of entropy generation or exergy losses can be considered as an objective function in designing heat
Seyed Ali Ashrafizadeh
doaj   +1 more source

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