Laminar Natural Convection of Newtonian and Non Newtonian Fluids Inside Triangular Enclosure

In the present work, steady two dimensional laminar natural convection heat transfer of Newtonian and non-Newtonian fluids inside isosceles triangular enclosure has been analyzed numerically for a wide range of the modified Rayleigh numbers of (103 ≤ Ra ≤ 105), with non-dimensio...

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Autor principal:	Ala?a Abbas Muhadi
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2007
Materias:	Natural Convection Non-Newtonian Fluids Triangular Enclosures - Finite Differences Method. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/e82dbaba754f4bb88ab654f605bd7026
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spelling	oai:doaj.org-article:e82dbaba754f4bb88ab654f605bd70262021-12-02T04:55:13ZLaminar Natural Convection of Newtonian and Non Newtonian Fluids Inside Triangular Enclosure1818-1171https://doaj.org/article/e82dbaba754f4bb88ab654f605bd70262007-01-01T00:00:00Zhttp://www.iasj.net/iasj?func=fulltext&aId=2274https://doaj.org/toc/1818-1171In the present work, steady two dimensional laminar natural convection heat transfer of Newtonian and non-Newtonian fluids inside isosceles triangular enclosure has been analyzed numerically for a wide range of the modified Rayleigh numbers of (103 ≤ Ra ≤ 105), with non-dimensional parameter (NE) of Prandtl Eyring model ranging from (0 to 10), and modified Prandtl number take in the range (Pr* =1,10, and 100). Two types of boundary conditions have been considered. The first, when the inclined walls are heated with different uniform temperatures and the lower wall is insulated. The second, when the bottom wall is heated by applying a uniform heat flux while the inclined walls at the constant cold temperature. Also, the non-Newtonian fluids under consideration were assumed to obey the Prandtl Eyring model..The results are presented in terms of isotherms and streamlines to show the behavior of the fluid flow and temperature fields. In addition, some graphics are presented the relation between average Nusselt number and the various parameters. The results show the effect of non dimensional parameter (NE) on the velocity and temperature profiles. They also show that the average Nusselt number is a strong function of modified Rayleigh number, modified Prandtl number, non-dimensional parameter, and the boundary conditions. Four different correlations have been made to show the dependence of the average Nusselt number on the non-dimensional parameter, the modified Rayleigh and Prandtl numbers.Ala?a Abbas MuhadiAl-Khwarizmi College of Engineering – University of BaghdadarticleNatural Convection Non-Newtonian Fluids Triangular Enclosures - Finite Differences Method.Chemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 3, Iss 1, Pp 63-93 (2007)
institution	DOAJ
collection	DOAJ
language	EN
topic	Natural Convection Non-Newtonian Fluids Triangular Enclosures - Finite Differences Method. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Natural Convection Non-Newtonian Fluids Triangular Enclosures - Finite Differences Method. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Ala?a Abbas Muhadi Laminar Natural Convection of Newtonian and Non Newtonian Fluids Inside Triangular Enclosure
description	In the present work, steady two dimensional laminar natural convection heat transfer of Newtonian and non-Newtonian fluids inside isosceles triangular enclosure has been analyzed numerically for a wide range of the modified Rayleigh numbers of (103 ≤ Ra ≤ 105), with non-dimensional parameter (NE) of Prandtl Eyring model ranging from (0 to 10), and modified Prandtl number take in the range (Pr* =1,10, and 100). Two types of boundary conditions have been considered. The first, when the inclined walls are heated with different uniform temperatures and the lower wall is insulated. The second, when the bottom wall is heated by applying a uniform heat flux while the inclined walls at the constant cold temperature. Also, the non-Newtonian fluids under consideration were assumed to obey the Prandtl Eyring model..The results are presented in terms of isotherms and streamlines to show the behavior of the fluid flow and temperature fields. In addition, some graphics are presented the relation between average Nusselt number and the various parameters. The results show the effect of non dimensional parameter (NE) on the velocity and temperature profiles. They also show that the average Nusselt number is a strong function of modified Rayleigh number, modified Prandtl number, non-dimensional parameter, and the boundary conditions. Four different correlations have been made to show the dependence of the average Nusselt number on the non-dimensional parameter, the modified Rayleigh and Prandtl numbers.
format	article
author	Ala?a Abbas Muhadi
author_facet	Ala?a Abbas Muhadi
author_sort	Ala?a Abbas Muhadi
title	Laminar Natural Convection of Newtonian and Non Newtonian Fluids Inside Triangular Enclosure
title_short	Laminar Natural Convection of Newtonian and Non Newtonian Fluids Inside Triangular Enclosure
title_full	Laminar Natural Convection of Newtonian and Non Newtonian Fluids Inside Triangular Enclosure
title_fullStr	Laminar Natural Convection of Newtonian and Non Newtonian Fluids Inside Triangular Enclosure
title_full_unstemmed	Laminar Natural Convection of Newtonian and Non Newtonian Fluids Inside Triangular Enclosure
title_sort	laminar natural convection of newtonian and non newtonian fluids inside triangular enclosure
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2007
url	https://doaj.org/article/e82dbaba754f4bb88ab654f605bd7026
work_keys_str_mv	AT alaaabbasmuhadi laminarnaturalconvectionofnewtonianandnonnewtonianfluidsinsidetriangularenclosure
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Laminar Natural Convection of Newtonian and Non Newtonian Fluids Inside Triangular Enclosure

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