@Article{, title={LAMINAR NATURAL CONVECTION INSIDE A SQUARE ENCLOSURE AROUND ISOTHERMALHORIZONTAL AND VERTICAL TRIANGULAR PARTITIONS}, author={Mohammed Yousif Jabbar}, journal={Iraqi journal of mechanical and material engineering المجلة العراقية للهندسة الميكانيكية وهندسة المواد}, volume={12}, number={3}, pages={582-595}, year={2012}, abstract={Two dimensional laminar natural convection heat transfer in a square cavitywith horizontal and vertical triangular partitions is studied by ANSYS 12.1. Thecomputational procedure based on finite element technique is used to solve equationsof continuity, momentum and energy. Two isothermal boundary conditions are considered. The segments of horizontal and vertical walls of the enclosure are maintained at hot temperature, while the triangular partitions surfaces are maintainedat cold temperature. Air was chosen as a working fluid with Prandtl number of 0.71.A parametric study is carried out using following parameters: Grashof number from104 to 106, Dimensionless partition height from 0.2l to 0.8l of half height or width ofthe enclosure. Representative result illustrating the effect of the above parameters onthe contours maps of the streamlines and isotherms are reported and discussed. It wasfound that, the convective heat transfer is greatly influenced by increasing thepartitions height. Increasing the partition height causes an increase in heat transfer dueto increasing cold surfaces, vise verse, causes decreases in the Nusselt number due todecrease in the flow speed.

} }