Magnetic Mixed Convection in a Vented Cavity with Volumetric Heat Generation or Absorption in Presence of a Cylindrical Obstacle

Authors: Md. Rubel Kazi, Mohammad Mokaddes Ali, Mijanul Hakim, Mizanur Rahman

Volume 8, Issue 3, Paper No. 080304


  Effect of magnetic field on mixed convection in a vented square cavity with volumetric heat generation or absorption in presence of a cylindrical obstacle is analyzed numerically. The right vertical wall is considered at the hot temperature Th and other partitions of the enclosure are adiabatic. The governing equations are solved based on finite element method. The relevant parameters in the current investigation, Prandtl number (0.03 ≤ Pr ≤ 2.97 ), Reynolds number (100 ≤ Re ≤ 500), Hartmann number (0 ≤ Ha ≤ 30), and volumetric heat generation or absorption parameter  (-10 ≤ Q ≤ 10) are taken to find streamlines and heat transfer nature. Flow and temperature fields inside the enclosure are investigated for the mentioned parameters whereas effective trend is determined. On the other hand, heat generation or absorption parameter is found almost invariant for the streamline and isotherm plots. In addition, average Nusselt numbers are found to explain the heat transport inside the cavity and the average temperature are assumed to be a powerful tool to analyze and discussion.

Keywords: Magnetic field; Mixed convection; Heat generation or absorption; Vented square cavity; Finite element method


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