TITLE:
Simulation of Natural Convection Flow with Magneto-Hydrodynamics in a Wavy Top Enclosure with a Semi-Circular Heater
AUTHORS:
Mohammad Mahfuzul Islam, Md. Abdul Alim, Md. Mahmud Alam, Md. Jahirul Haque Munshi
KEYWORDS:
Natural Convection, Magneto-Hydrodynamics (MHD), Finite Element Method (FEM), Wavy Enclosure, Semi-Circular Heater
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.13 No.4,
April
28,
2023
ABSTRACT: Natural
convection flow in enclosure has different applications such as room
ventilation, heat exchangers, the cooling system of a building etc. The
Finite-Element method based on the Galerkin weighted residual approach is used
to solve two-dimensional governing mass, momentum and energy-equations for
natural convection flow in the presence of a magnetic field on a roof top with
semi-circular heater. In the enclosure the horizontal lower wall was heated,
the vertical two walls were adiabatic, inside the semi-circular heater, the
wavy top wall cooled. The parameters Rayleigh
number, Hartmann number and Prandtl number are considered. The effects of the
Hartmann number and Rayleigh number on
the streamlines, isotherms, velocity profiles and average Nusselt number
are examined graphically. The local Nusselt number and the average Nusselt number of the heated portion of the enclosure
with the semi-circular heater are presented in this paper. Finally, for
the validation of the existing work, the current results are compared with
published results and the auspicious agreement is achieved.