Numerical study of natural convection nanofluids flow in tilted cavities with a partially thermally heat source

Numerically, natural convection heat transfer of nanofluids in a two-dimensional tilt square enclosure was investigated, with a partial heat source embedded on the bottom wall subject to a fixed heat flux. The remaining portions of the horizontal bottom wall are assumed to be adiabatic, while the up...

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Autores principales:	Djamila Benyoucef, Samira Noui, Afaf Djaraoui
Formato:	article
Lenguaje:	EN
Publicado:	SAGE Publishing 2021
Materias:	Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/c6cc445326394c68944578e008f1747c
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spelling	oai:doaj.org-article:c6cc445326394c68944578e008f1747c2021-11-19T01:33:40ZNumerical study of natural convection nanofluids flow in tilted cavities with a partially thermally heat source1687-814010.1177/16878140211060682https://doaj.org/article/c6cc445326394c68944578e008f1747c2021-11-01T00:00:00Zhttps://doi.org/10.1177/16878140211060682https://doaj.org/toc/1687-8140Numerically, natural convection heat transfer of nanofluids in a two-dimensional tilt square enclosure was investigated, with a partial heat source embedded on the bottom wall subject to a fixed heat flux. The remaining portions of the horizontal bottom wall are assumed to be adiabatic, while the upper horizontal wall and the vertical ones are supposed to be at a relatively low temperature. Using the finite volume method and the SIMPLER algorithm, the governing equations have been discretized and solved. Simulations have been carried out for more than one nanoparticle and base fluid, a range of Rayleigh numbers ( 10 3 ≤ Ra ≤ 10 6 ), various values of heat source length and location (0.2 ≤ B ≤ 0.8 and 0.2 ≤ D ≤ 0.5, respectively), solid volume fraction ( 0 ≤ ϕ ≤ 20 % ) as well as tilt angle ( 0 ° ≤ φ ≤ 90 ° ). The results indicate that the heat transfer performance increases by adding nanoparticles into the base fluid. An optimum solid volume fraction raises and reduces the heat transfer rate and maximum temperature of the surface heat source. respectively. Moreover, the results show a significant impact of the tilt angle on the flow, temperature patterns, and the heat transfer rate with a specific tilt angle depending to the pertinent parameters.Djamila BenyoucefSamira NouiAfaf DjaraouiSAGE PublishingarticleMechanical engineering and machineryTJ1-1570ENAdvances in Mechanical Engineering, Vol 13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Mechanical engineering and machinery TJ1-1570
spellingShingle	Mechanical engineering and machinery TJ1-1570 Djamila Benyoucef Samira Noui Afaf Djaraoui Numerical study of natural convection nanofluids flow in tilted cavities with a partially thermally heat source
description	Numerically, natural convection heat transfer of nanofluids in a two-dimensional tilt square enclosure was investigated, with a partial heat source embedded on the bottom wall subject to a fixed heat flux. The remaining portions of the horizontal bottom wall are assumed to be adiabatic, while the upper horizontal wall and the vertical ones are supposed to be at a relatively low temperature. Using the finite volume method and the SIMPLER algorithm, the governing equations have been discretized and solved. Simulations have been carried out for more than one nanoparticle and base fluid, a range of Rayleigh numbers ( 10 3 ≤ Ra ≤ 10 6 ), various values of heat source length and location (0.2 ≤ B ≤ 0.8 and 0.2 ≤ D ≤ 0.5, respectively), solid volume fraction ( 0 ≤ ϕ ≤ 20 % ) as well as tilt angle ( 0 ° ≤ φ ≤ 90 ° ). The results indicate that the heat transfer performance increases by adding nanoparticles into the base fluid. An optimum solid volume fraction raises and reduces the heat transfer rate and maximum temperature of the surface heat source. respectively. Moreover, the results show a significant impact of the tilt angle on the flow, temperature patterns, and the heat transfer rate with a specific tilt angle depending to the pertinent parameters.
format	article
author	Djamila Benyoucef Samira Noui Afaf Djaraoui
author_facet	Djamila Benyoucef Samira Noui Afaf Djaraoui
author_sort	Djamila Benyoucef
title	Numerical study of natural convection nanofluids flow in tilted cavities with a partially thermally heat source
title_short	Numerical study of natural convection nanofluids flow in tilted cavities with a partially thermally heat source
title_full	Numerical study of natural convection nanofluids flow in tilted cavities with a partially thermally heat source
title_fullStr	Numerical study of natural convection nanofluids flow in tilted cavities with a partially thermally heat source
title_full_unstemmed	Numerical study of natural convection nanofluids flow in tilted cavities with a partially thermally heat source
title_sort	numerical study of natural convection nanofluids flow in tilted cavities with a partially thermally heat source
publisher	SAGE Publishing
publishDate	2021
url	https://doaj.org/article/c6cc445326394c68944578e008f1747c
work_keys_str_mv	AT djamilabenyoucef numericalstudyofnaturalconvectionnanofluidsflowintiltedcavitieswithapartiallythermallyheatsource AT samiranoui numericalstudyofnaturalconvectionnanofluidsflowintiltedcavitieswithapartiallythermallyheatsource AT afafdjaraoui numericalstudyofnaturalconvectionnanofluidsflowintiltedcavitieswithapartiallythermallyheatsource
_version_	1718420634998931456

Numerical study of natural convection nanofluids flow in tilted cavities with a partially thermally heat source

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