Magnetohydrodynamic mixed convection in a horizontal channel with an open cavity

Rahman, M.M. and Parvin, S. and Saidur, Rahman and Rahim, N.A. (2011) Magnetohydrodynamic mixed convection in a horizontal channel with an open cavity. International Communications in Heat and Mass Transfer, 38 (2). pp. 184-193. ISSN 0735-1933

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Abstract

The development of magnetic field effect on mixed convective flow in a horizontal channel with a bottom heated open enclosure has been numerically studied. The enclosure considered has rectangular horizontal lower surface and vertical side surfaces. The lower surface is at a uniform temperature T h while other sides of the cavity along with the channel walls are adiabatic. The governing two-dimensional flow equations have been solved by using Galarkin weighted residual finite element technique. The investigations are conducted for different values of Rayleigh number (Ra), Reynolds number (Re) and Hartmann number (Ha). Various characteristics such as streamlines, isotherms and heat transfer rate in terms of the average Nusselt number (Nu), the Drag force (D) and average bulk temperature (- av) are presented. The results indicate that the mentioned parameters strongly affect the flow phenomenon and temperature field inside the cavity whereas in the channel these effects are less significant.

Item Type: Article
Additional Information: 733WA Times Cited:7 Cited References Count:25
Uncontrolled Keywords: Channel; Finite element method; Magnetohydrodynamic; Mixed convection; Open enclosure; Bulk temperatures; Channel wall; Drag forces; Finite element techniques; Flow Phenomena; Hartmann numbers; Heat transfer rate; Horizontal channels; Mixed convective flow; Open cavity; Rayleigh number; Temperature field; Two-dimensional flow; Uniform temperature; Weighted residuals; Drag; Enclosures; Magnetic fields; Magnetohydrodynamics; Nusselt number; Reynolds number; Thermoelectricity.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 04 Jul 2013 01:34
Last Modified: 25 Oct 2019 06:17
URI: http://eprints.um.edu.my/id/eprint/6622

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