Title of article :
Transient Natural Convection in a Rectangular Cavity Filled with Porous Medium Heated Discretely at Vertical Wall
Author/Authors :
Abdullah, M. Z. Universiti Sains Malaysia - School of Mechanical Engineering, Malaysia , Mujeebu, M. A. Universiti Sains Malaysia - School of Mechanical Eng, Malaysia , Gitano, H. Universiti Sains Malaysia - School of Mechanical Engineering, Malaysia , Yaakob, Y. University Teknologi Mara - Department of Mechanical Engineering, Malaysia , Abdullah, M. K. Universiti Sains Malaysia - School of Mechanical Engineering, Malaysia
Abstract :
Numerical analysis is presented for transient buoyancy-induced natural convection from discrete heating inside a two-dimensional rectangular enclosure filled with porous medium. The study has been made for Rayleigh numbers of 100, 1000 and 10000 with an aspect ratio of 2. The left vertical wall is heated discretely to a constant high temperature and the right wall is cooled to a constant low temperature. The remaining two walls are adiabatic. The finite volume method is used to solve the dimensionless governing equations. The distribution of stream function was observed and temperature distributions are presented at different timelines and analysed. In addition, the present results were also compared with those of previous researchers for isothermal walls and was found to be in good agreement.
Keywords :
porous medium , natural convection , fluid flows , discrete heating , Nusselt number
Journal title :
Journal of Engineering Science
Journal title :
Journal of Engineering Science
