Natural convection in an enclosure under the influence of time-periodic magnetic field

Article type: Research Article

Authors: Jalil, Jalal M.^a | Al-Tae'y, Kays A.^a

Affiliations: [a] University of Technology, Electromechanical Engineering Department, Hay AL-Wahda, PO Box 35010, Baghdad, Iraq. E-mail: {jalalmjalil,kaysaaltaey}@yahoo.com

Abstract: A two-dimensional thermal laminar natural convection of molten gallium in square enclosure isothermally heated and cooled from a side vertical wall was numerically computed in both time-periodic magnetic and gravity fields. The magnetic field is described by a sinusoidal time-varying equation. The thermal coefficient heat transfer has been calculated for various magnetic field strengths, but at a certain value of frequency and for different frequencies, but at a certain value of magnetic field strength. The results show that the effect of the time-periodic magnetic field on the flow field and heat transfer is lower than that of steady (DC) magnetic field effect at the same magnetic field strength.

DOI: 10.3233/JAE-2009-1050

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 31, no. 2, pp. 97-111, 2009