Correlations for Total Entropy Generation and Bejan Number for Free Convective Heat Transfer of an Eco-Friendly Nanofluid in a Rectangular Enclosure under Uniform Magnetic Field

In this paper, focusing on the study of entropy generation (EGN), the convection flow of an eco-friendly nanofluid (N-F) in a rectangular enclosure is studied numerically. The nanoparticles (N-Ps) used are silver N-P, which are obtained in an eco-friendly manner from natural materials. By suspending...

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Autores principales:	Yacine Khetib, Hala M. Abo-Dief, Abdullah K. Alanazi, Goshtasp Cheraghian, S. Mohammad Sajadi, Mohsen Sharifpur
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	triangular blades natural convection entropy generation magnetic field eco-friendly N-F Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/14887444e1d04ed1a26406a4fc278876
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spelling	oai:doaj.org-article:14887444e1d04ed1a26406a4fc2788762021-11-25T18:50:34ZCorrelations for Total Entropy Generation and Bejan Number for Free Convective Heat Transfer of an Eco-Friendly Nanofluid in a Rectangular Enclosure under Uniform Magnetic Field10.3390/pr91119302227-9717https://doaj.org/article/14887444e1d04ed1a26406a4fc2788762021-10-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/1930https://doaj.org/toc/2227-9717In this paper, focusing on the study of entropy generation (EGN), the convection flow of an eco-friendly nanofluid (N-F) in a rectangular enclosure is studied numerically. The nanoparticles (N-Ps) used are silver N-P, which are obtained in an eco-friendly manner from natural materials. By suspending these N-Ps in an equal mixture of water and ethylene glycol (E-G), the N-F has been prepared. There are two constant-temperature triangular obstacles with height w and base H that are placed on the hot wall. There is a magnetic field (M-F) in the x-direction. To simulate the N-F flow, eco-friendly N-P relations are used, and the equations are solved using the volume control method and the SIMPLE algorithm. The variables include Rayleigh number (Ra), Hartmann number (Ha), H, W, and the volume fraction of silver N-Ps. The effect of these parameters is evaluated on the EGN and Bejan number (Be). Finally, a correlation is expressed for the EGN for a range of variables. The most important results of this paper demonstrate that the addition of silver eco-friendly N-Ps intensifies the EGN so that the addition of 3% of N-Ps enhances the EGN by 3.8%. An increment in the obstacle length reduces the Be barrier while increasing the Ha, which enhances the Be when the convection is strong. Increasing the height of the obstacle intensifies entropy generation.Yacine KhetibHala M. Abo-DiefAbdullah K. AlanaziGoshtasp CheraghianS. Mohammad SajadiMohsen SharifpurMDPI AGarticletriangular bladesnatural convectionentropy generationmagnetic fieldeco-friendly N-FChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 1930, p 1930 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	triangular blades natural convection entropy generation magnetic field eco-friendly N-F Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	triangular blades natural convection entropy generation magnetic field eco-friendly N-F Chemical technology TP1-1185 Chemistry QD1-999 Yacine Khetib Hala M. Abo-Dief Abdullah K. Alanazi Goshtasp Cheraghian S. Mohammad Sajadi Mohsen Sharifpur Correlations for Total Entropy Generation and Bejan Number for Free Convective Heat Transfer of an Eco-Friendly Nanofluid in a Rectangular Enclosure under Uniform Magnetic Field
description	In this paper, focusing on the study of entropy generation (EGN), the convection flow of an eco-friendly nanofluid (N-F) in a rectangular enclosure is studied numerically. The nanoparticles (N-Ps) used are silver N-P, which are obtained in an eco-friendly manner from natural materials. By suspending these N-Ps in an equal mixture of water and ethylene glycol (E-G), the N-F has been prepared. There are two constant-temperature triangular obstacles with height w and base H that are placed on the hot wall. There is a magnetic field (M-F) in the x-direction. To simulate the N-F flow, eco-friendly N-P relations are used, and the equations are solved using the volume control method and the SIMPLE algorithm. The variables include Rayleigh number (Ra), Hartmann number (Ha), H, W, and the volume fraction of silver N-Ps. The effect of these parameters is evaluated on the EGN and Bejan number (Be). Finally, a correlation is expressed for the EGN for a range of variables. The most important results of this paper demonstrate that the addition of silver eco-friendly N-Ps intensifies the EGN so that the addition of 3% of N-Ps enhances the EGN by 3.8%. An increment in the obstacle length reduces the Be barrier while increasing the Ha, which enhances the Be when the convection is strong. Increasing the height of the obstacle intensifies entropy generation.
format	article
author	Yacine Khetib Hala M. Abo-Dief Abdullah K. Alanazi Goshtasp Cheraghian S. Mohammad Sajadi Mohsen Sharifpur
author_facet	Yacine Khetib Hala M. Abo-Dief Abdullah K. Alanazi Goshtasp Cheraghian S. Mohammad Sajadi Mohsen Sharifpur
author_sort	Yacine Khetib
title	Correlations for Total Entropy Generation and Bejan Number for Free Convective Heat Transfer of an Eco-Friendly Nanofluid in a Rectangular Enclosure under Uniform Magnetic Field
title_short	Correlations for Total Entropy Generation and Bejan Number for Free Convective Heat Transfer of an Eco-Friendly Nanofluid in a Rectangular Enclosure under Uniform Magnetic Field
title_full	Correlations for Total Entropy Generation and Bejan Number for Free Convective Heat Transfer of an Eco-Friendly Nanofluid in a Rectangular Enclosure under Uniform Magnetic Field
title_fullStr	Correlations for Total Entropy Generation and Bejan Number for Free Convective Heat Transfer of an Eco-Friendly Nanofluid in a Rectangular Enclosure under Uniform Magnetic Field
title_full_unstemmed	Correlations for Total Entropy Generation and Bejan Number for Free Convective Heat Transfer of an Eco-Friendly Nanofluid in a Rectangular Enclosure under Uniform Magnetic Field
title_sort	correlations for total entropy generation and bejan number for free convective heat transfer of an eco-friendly nanofluid in a rectangular enclosure under uniform magnetic field
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/14887444e1d04ed1a26406a4fc278876
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Correlations for Total Entropy Generation and Bejan Number for Free Convective Heat Transfer of an Eco-Friendly Nanofluid in a Rectangular Enclosure under Uniform Magnetic Field

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