Quasi-two-dimensional case studies of MHD flow and heat transfer behind a square cylinder in a duct

Subtitle:

Article type: Research Article

Authors: Farahi Shahri, Mohammad^* | Hossein Nezhad, Alireza

Affiliations: Department of Mechanical Engineering, University of Sistan and Baluchestan, Zahedan, Iran

Correspondence: [*] Corresponding author: Mohammad Farahi Shahri, Department of Mechanical Engineering, University of Sistan and Baluchestan, Zahedan, Iran. Tel.: +98 9151498410; E-mail:m.farahi@pgs.usb.ac.ir

Abstract: In this paper, magnetohydrodynamic duct flow and heat transfer behind a square cylinder is studied numerically, using a quasi-two-dimensional (Q2D) model known as SM82. A variety of case studies are performed to signify the effects of the magnetic field intensity and the cylinder size on the total channel wall heat flux of a liquid metal (GaInSn) and the required pumping power. Comparing the results of the present study with the experimental data argued that the present Q2D model yields reliable results. Increasing the magnetic field intensity reduces the total channel wall heat flux. Current case studies show that in order to maximize heat transfer rate from the heated channel wall, one can use a larger cylinder but at the expense of greater pumping powers.

Keywords: Magnetohydrodynamic, square cylinder size, magnetic field intensity, heat transfer, pumping power

DOI: 10.3233/JAE-150019

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 49, no. 1, pp. 123-132, 2015