Natural Convection in Trapezoidal Enclosure Heated Partially from Below

Natural convection in a trapezoidal enclosure with partial heating from below and symmetrical cooling from the sides has been investigated numerically. The heating is simulated by a centrally located heat source on the bottom wall, and four different values of the dimensionless heat source length,...

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Autores principales:	Ahmed W. Mustafa, Ihsan Ali Ghani
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2012
Materias:	Natural Convection Trapezoidal Enclosure Finite Volume Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/fb57d0d41fc44a988e3020588aa22438
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spelling	oai:doaj.org-article:fb57d0d41fc44a988e3020588aa224382021-12-02T10:53:35ZNatural Convection in Trapezoidal Enclosure Heated Partially from Below1818-11712312-0789https://doaj.org/article/fb57d0d41fc44a988e3020588aa224382012-02-01T00:00:00Zhttp://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/107https://doaj.org/toc/1818-1171https://doaj.org/toc/2312-0789 Natural convection in a trapezoidal enclosure with partial heating from below and symmetrical cooling from the sides has been investigated numerically. The heating is simulated by a centrally located heat source on the bottom wall, and four different values of the dimensionless heat source length, 1/5, 2/5, 3/5, 4/5 are considered. The laminar flow field is analyzed numerically by solving the steady, two-dimensional incompressible Navier-Stokes and energy equations. The Cartesian velocity components and pressure on a collocated (non-staggered) grid are used as dependent variables in the momentum equations discretized by finite volume method; body fitted coordinates are used to represent the trapezoidal enclosure, and grid generation technique based on elliptic partial differential equations is employed. SIMPLE algorithm is used to adjust the velocity field to satisfy the conservation of mass. The range of Rayleigh number is (103≤ Ra ≤105) and Prandtl number is 0.7. The results show that the average Nusselt number increases with the increases of the source length. Ahmed W. MustafaIhsan Ali GhaniAl-Khwarizmi College of Engineering – University of BaghdadarticleNatural ConvectionTrapezoidal EnclosureFinite VolumeChemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 8, Iss 1 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Natural Convection Trapezoidal Enclosure Finite Volume Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Natural Convection Trapezoidal Enclosure Finite Volume Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Ahmed W. Mustafa Ihsan Ali Ghani Natural Convection in Trapezoidal Enclosure Heated Partially from Below
description	Natural convection in a trapezoidal enclosure with partial heating from below and symmetrical cooling from the sides has been investigated numerically. The heating is simulated by a centrally located heat source on the bottom wall, and four different values of the dimensionless heat source length, 1/5, 2/5, 3/5, 4/5 are considered. The laminar flow field is analyzed numerically by solving the steady, two-dimensional incompressible Navier-Stokes and energy equations. The Cartesian velocity components and pressure on a collocated (non-staggered) grid are used as dependent variables in the momentum equations discretized by finite volume method; body fitted coordinates are used to represent the trapezoidal enclosure, and grid generation technique based on elliptic partial differential equations is employed. SIMPLE algorithm is used to adjust the velocity field to satisfy the conservation of mass. The range of Rayleigh number is (103≤ Ra ≤105) and Prandtl number is 0.7. The results show that the average Nusselt number increases with the increases of the source length.
format	article
author	Ahmed W. Mustafa Ihsan Ali Ghani
author_facet	Ahmed W. Mustafa Ihsan Ali Ghani
author_sort	Ahmed W. Mustafa
title	Natural Convection in Trapezoidal Enclosure Heated Partially from Below
title_short	Natural Convection in Trapezoidal Enclosure Heated Partially from Below
title_full	Natural Convection in Trapezoidal Enclosure Heated Partially from Below
title_fullStr	Natural Convection in Trapezoidal Enclosure Heated Partially from Below
title_full_unstemmed	Natural Convection in Trapezoidal Enclosure Heated Partially from Below
title_sort	natural convection in trapezoidal enclosure heated partially from below
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2012
url	https://doaj.org/article/fb57d0d41fc44a988e3020588aa22438
work_keys_str_mv	AT ahmedwmustafa naturalconvectionintrapezoidalenclosureheatedpartiallyfrombelow AT ihsanalighani naturalconvectionintrapezoidalenclosureheatedpartiallyfrombelow
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Natural Convection in Trapezoidal Enclosure Heated Partially from Below

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