Entropy generation for MHD natural convection in enclosure with a micropolar fluid saturated porous medium with Al2O3Cu water hybrid nanofluid

This contribution gives a numerical investigation of buoyancy-driven flow of natural convection heat transfer and entropy generation of non-Newtonian hybrid nanofluid (Al2O3-Cu) within an enclosure square porous cavity. Hybrid nanofluids represent a novel type of enhanced active fluids. During the...

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Autores principales:	A. Mahdy, S.E. Ahmed, M.A. Mansour
Formato:	article
Lenguaje:	EN
Publicado:	Vilnius University Press 2021
Materias:	entropy MHD free convection hybrid nanofluid cavity Analysis QA299.6-433
Acceso en línea:	https://doaj.org/article/6115dd8558974d9d934877442b4308b5
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spelling	oai:doaj.org-article:6115dd8558974d9d934877442b4308b52021-12-02T19:40:26ZEntropy generation for MHD natural convection in enclosure with a micropolar fluid saturated porous medium with Al2O3Cu water hybrid nanofluid10.15388/namc.2021.26.249401392-51132335-8963https://doaj.org/article/6115dd8558974d9d934877442b4308b52021-11-01T00:00:00Zhttps://www.journals.vu.lt/nonlinear-analysis/article/view/24940https://doaj.org/toc/1392-5113https://doaj.org/toc/2335-8963 This contribution gives a numerical investigation of buoyancy-driven flow of natural convection heat transfer and entropy generation of non-Newtonian hybrid nanofluid (Al2O3-Cu) within an enclosure square porous cavity. Hybrid nanofluids represent a novel type of enhanced active fluids. During the current theoretical investigation, an actual available empirical data for both thermal conductivity and dynamic viscosity of hybrid nanofluids are applied directly. Numerical simulation have been implemented for solid nanoparticles, the volumetric concentration of which varies from 0.0% (i.e., pure fluid) to 0.1% of hybrid nanofluids. Heat and sink sources are situated on a part of the left and right sides of the cavity with length B, while the upper and bottom horizontal sides are kept adiabatic. The stated partial differential equations describing the flow are mutated to a dimensionless formulas, then solved numerically via the help of an implicit finite difference approach. The acquired computations are given in terms of streamlines, isotherms, isomicrorotations, isoconcentraions, local Began number, total entropy, local and mean Nusselt numbers. The data illustrates that variations of ratio of the average Nusselt number to the average Nusselt of pure fluid Num+ is a decreasing function of Ha and φ, while e+ is an increasing function of Ha and φ parameters of hybrid nanofluid. A. MahdyS.E. AhmedM.A. MansourVilnius University PressarticleentropyMHDfree convectionhybrid nanofluidcavityAnalysisQA299.6-433ENNonlinear Analysis, Vol 26, Iss 6 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	entropy MHD free convection hybrid nanofluid cavity Analysis QA299.6-433
spellingShingle	entropy MHD free convection hybrid nanofluid cavity Analysis QA299.6-433 A. Mahdy S.E. Ahmed M.A. Mansour Entropy generation for MHD natural convection in enclosure with a micropolar fluid saturated porous medium with Al2O3Cu water hybrid nanofluid
description	This contribution gives a numerical investigation of buoyancy-driven flow of natural convection heat transfer and entropy generation of non-Newtonian hybrid nanofluid (Al2O3-Cu) within an enclosure square porous cavity. Hybrid nanofluids represent a novel type of enhanced active fluids. During the current theoretical investigation, an actual available empirical data for both thermal conductivity and dynamic viscosity of hybrid nanofluids are applied directly. Numerical simulation have been implemented for solid nanoparticles, the volumetric concentration of which varies from 0.0% (i.e., pure fluid) to 0.1% of hybrid nanofluids. Heat and sink sources are situated on a part of the left and right sides of the cavity with length B, while the upper and bottom horizontal sides are kept adiabatic. The stated partial differential equations describing the flow are mutated to a dimensionless formulas, then solved numerically via the help of an implicit finite difference approach. The acquired computations are given in terms of streamlines, isotherms, isomicrorotations, isoconcentraions, local Began number, total entropy, local and mean Nusselt numbers. The data illustrates that variations of ratio of the average Nusselt number to the average Nusselt of pure fluid Num+ is a decreasing function of Ha and φ, while e+ is an increasing function of Ha and φ parameters of hybrid nanofluid.
format	article
author	A. Mahdy S.E. Ahmed M.A. Mansour
author_facet	A. Mahdy S.E. Ahmed M.A. Mansour
author_sort	A. Mahdy
title	Entropy generation for MHD natural convection in enclosure with a micropolar fluid saturated porous medium with Al2O3Cu water hybrid nanofluid
title_short	Entropy generation for MHD natural convection in enclosure with a micropolar fluid saturated porous medium with Al2O3Cu water hybrid nanofluid
title_full	Entropy generation for MHD natural convection in enclosure with a micropolar fluid saturated porous medium with Al2O3Cu water hybrid nanofluid
title_fullStr	Entropy generation for MHD natural convection in enclosure with a micropolar fluid saturated porous medium with Al2O3Cu water hybrid nanofluid
title_full_unstemmed	Entropy generation for MHD natural convection in enclosure with a micropolar fluid saturated porous medium with Al2O3Cu water hybrid nanofluid
title_sort	entropy generation for mhd natural convection in enclosure with a micropolar fluid saturated porous medium with al2o3cu water hybrid nanofluid
publisher	Vilnius University Press
publishDate	2021
url	https://doaj.org/article/6115dd8558974d9d934877442b4308b5
work_keys_str_mv	AT amahdy entropygenerationformhdnaturalconvectioninenclosurewithamicropolarfluidsaturatedporousmediumwithal2o3cuwaterhybridnanofluid AT seahmed entropygenerationformhdnaturalconvectioninenclosurewithamicropolarfluidsaturatedporousmediumwithal2o3cuwaterhybridnanofluid AT mamansour entropygenerationformhdnaturalconvectioninenclosurewithamicropolarfluidsaturatedporousmediumwithal2o3cuwaterhybridnanofluid
_version_	1718376204888702976

Entropy generation for MHD natural convection in enclosure with a micropolar fluid saturated porous medium with Al2O3Cu water hybrid nanofluid

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