Entropy production and mixed convection within trapezoidal cavity having nanofluids and localised solid cylinder

Abstract The entropy production and mixed convection within a trapezoidal nanofluid-filled cavity having a localised solid cylinder is numerically examined using the finite element technique. The top horizontal surface moving at a uniform velocity is kept at a cold temperature, while the bottom hori...

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Autores principales:	Muhamad S. Ishak, Ammar I. Alsabery, Ishak Hashim, Ali J. Chamkha
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0d64d5fb4e314e0d8b36f214eda7041b
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spelling	oai:doaj.org-article:0d64d5fb4e314e0d8b36f214eda7041b2021-12-02T16:17:17ZEntropy production and mixed convection within trapezoidal cavity having nanofluids and localised solid cylinder10.1038/s41598-021-94238-w2045-2322https://doaj.org/article/0d64d5fb4e314e0d8b36f214eda7041b2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94238-whttps://doaj.org/toc/2045-2322Abstract The entropy production and mixed convection within a trapezoidal nanofluid-filled cavity having a localised solid cylinder is numerically examined using the finite element technique. The top horizontal surface moving at a uniform velocity is kept at a cold temperature, while the bottom horizontal surface is thermally activated. The remaining surfaces are maintained adiabatic. Water-based nanofluids ( $$\text {Al}_2\text {O}_3$$ Al 2 O 3 nanoparticles) are used in this study, and the Boussinesq approximation applies. The influence of the Reynolds number, Richardson number, nanoparticles volume fraction, dimensionless radius and location of the solid cylinder on the streamlines, isotherms and isentropic are examined. The results show that the solid cylinder’s size and location are significant control parameters for optimising the heat transfer and the Bejan number inside the trapezoidal cavity. Furthermore, the maximum average Nusselt numbers are obtained for high R values, where the average Nusselt number is increased by 30% when R is raised from 0 to 0.25.Muhamad S. IshakAmmar I. AlsaberyIshak HashimAli J. ChamkhaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-22 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Muhamad S. Ishak Ammar I. Alsabery Ishak Hashim Ali J. Chamkha Entropy production and mixed convection within trapezoidal cavity having nanofluids and localised solid cylinder
description	Abstract The entropy production and mixed convection within a trapezoidal nanofluid-filled cavity having a localised solid cylinder is numerically examined using the finite element technique. The top horizontal surface moving at a uniform velocity is kept at a cold temperature, while the bottom horizontal surface is thermally activated. The remaining surfaces are maintained adiabatic. Water-based nanofluids ( $$\text {Al}_2\text {O}_3$$ Al 2 O 3 nanoparticles) are used in this study, and the Boussinesq approximation applies. The influence of the Reynolds number, Richardson number, nanoparticles volume fraction, dimensionless radius and location of the solid cylinder on the streamlines, isotherms and isentropic are examined. The results show that the solid cylinder’s size and location are significant control parameters for optimising the heat transfer and the Bejan number inside the trapezoidal cavity. Furthermore, the maximum average Nusselt numbers are obtained for high R values, where the average Nusselt number is increased by 30% when R is raised from 0 to 0.25.
format	article
author	Muhamad S. Ishak Ammar I. Alsabery Ishak Hashim Ali J. Chamkha
author_facet	Muhamad S. Ishak Ammar I. Alsabery Ishak Hashim Ali J. Chamkha
author_sort	Muhamad S. Ishak
title	Entropy production and mixed convection within trapezoidal cavity having nanofluids and localised solid cylinder
title_short	Entropy production and mixed convection within trapezoidal cavity having nanofluids and localised solid cylinder
title_full	Entropy production and mixed convection within trapezoidal cavity having nanofluids and localised solid cylinder
title_fullStr	Entropy production and mixed convection within trapezoidal cavity having nanofluids and localised solid cylinder
title_full_unstemmed	Entropy production and mixed convection within trapezoidal cavity having nanofluids and localised solid cylinder
title_sort	entropy production and mixed convection within trapezoidal cavity having nanofluids and localised solid cylinder
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/0d64d5fb4e314e0d8b36f214eda7041b
work_keys_str_mv	AT muhamadsishak entropyproductionandmixedconvectionwithintrapezoidalcavityhavingnanofluidsandlocalisedsolidcylinder AT ammarialsabery entropyproductionandmixedconvectionwithintrapezoidalcavityhavingnanofluidsandlocalisedsolidcylinder AT ishakhashim entropyproductionandmixedconvectionwithintrapezoidalcavityhavingnanofluidsandlocalisedsolidcylinder AT alijchamkha entropyproductionandmixedconvectionwithintrapezoidalcavityhavingnanofluidsandlocalisedsolidcylinder
_version_	1718384214918823936

Entropy production and mixed convection within trapezoidal cavity having nanofluids and localised solid cylinder

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