Numerical simulations of natural convection heat transfer along a vertical cylinder

Muhammad Rafique; I. Ahmad; M. Abdul Basit; Romana Begum; Wajid Aziz; Muhammad Farooq; Kamran Rasheed Qureshi

doi:10.1108/09615531111095102

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International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Online from: 1991

Subject Area: Mechanical & Materials Engineering

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Numerical simulations of natural convection heat transfer along a vertical cylinder

Document Information:
Title:	Numerical simulations of natural convection heat transfer along a vertical cylinder
Author(s):	Muhammad Rafique, (Department of Physics, University of Azad Jammu & Kashmir, Muzaffarabad, Pakistan), I. Ahmad, (Department of Mathematics, University of Azad Jammu & Kashmir, Muzaffarabad, Pakistan), M. Abdul Basit, (Department of Mechanical Engineering, Pakistan Institute of Engineering and Applied Sciences, Islamabad, Pakistan), Romana Begum, (Department of Mechanical Engineering, Pakistan Institute of Engineering and Applied Sciences, Islamabad, Pakistan), Wajid Aziz, (Department of CS & IT, University of Azad Jammu & Kashmir, Muzaffarabad, Pakistan), Muhammad Farooq, (Army Public School and College, Rawalpindi, Pakistan), Kamran Rasheed Qureshi, (Department of Mechanical Engineering, Pakistan Institute of Engineering and Applied Sciences, Islamabad, Pakistan)
Citation:	Muhammad Rafique, I. Ahmad, M. Abdul Basit, Romana Begum, Wajid Aziz, Muhammad Farooq, Kamran Rasheed Qureshi, (2011) "Numerical simulations of natural convection heat transfer along a vertical cylinder", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 21 Iss: 1, pp.112 - 130
Keywords:	Convection, Fluid, Heat transfer, Simulation, Viscosity
Article type:	Research paper
DOI:	10.1108/09615531111095102 (Permanent URL)
Publisher:	Emerald Group Publishing Limited
Abstract:	Purpose – The purpose of this paper is to present a numerical solution for the problem of steady laminar flow and heat transfer characteristics of viscous incompressible fluid. Design/methodology/approach – For this purpose a two dimensional code has been developed to simulate the natural convection heat transfer along a vertical cylinder, for four different geometries: from vertical cylinder in infinite medium; from a vertical flat plate in an infinite medium; from an open assembly of a finite vertical cylinder; and from an open rectangular pitch assembly of cylinders. Findings – The effects of various parameters of interest have been discussed through simulations. The Nusselt numbers of constant wall temperature and constant heat flux cylinders calculated numerically and compared with Lee et al. and Heckel et al., respectively, and are found within reasonable agreement. For large radius, a vertical cylinder has been treated as a vertical flat plate, so that the curvature effects become negligible. For the case of vertical flat plate, Nusselt number has been compared with analytical relation for the local Nusselt number given by Jaluria. Practical implications – The natural convection has been studied for four different geometries: the flow regime in all the case studies has been assumed to be Laminar. Originality/value – Computer code developed for current study can be applied to many other geometries to simulate natural convection heat transfer.