Finite element simulation of magnetohydrodynamic mixed convection in a double-lid driven enclosure with a square heat-generating block

• Main Authors: Rahman, M.M., Billah, M.M., Rahim, N.A., Saidur, Rahman, Hasanuzzaman, M.
• Format: Article
• Published: Journal of Heat Transfer-Transactions of the Asme 2012
• Subjects: TA Engineering (General). Civil engineering (General); TJ Mechanical engineering and machinery
• Online Access: http://eprints.um.edu.my/6282/; http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JHTRAO000134000006062501000001&idtype=cvips&gifs=yes&ref=no
• Institution: Universiti Malaya

Magnetohydrodynamic (MHD) mixed-convection flow and heat transfer characteristics inside a square double-lid driven enclosure have been investigated in this study. A heat-generating solid square block is positioned at the centre of the enclosure. Both of its vertical walls are lid-driven and have temperature T-c and uniform velocity V-0. In addition, the top and bottom surfaces are kept adiabatic. Discretization of governing equations is achieved using finite element technique based on Galerkin weighted residuals. The computation is carried out for a wide range of pertinent parameters such as Hartmann number, heat-generating parameter, and Richardson number. Numerical results are reported for the effects of aforesaid parameters on the streamline and isotherm contours. In addition, the heat transfer rate in terms of the average Nusselt number and temperature of the fluid as well as block center are presented for the mentioned parametric values. The obtained results show that the flow and thermal fields are influenced by the above-mentioned parameters.