Effects of Forced Convection on Temperature Distribution and Velocity Profiles in a Room

Abstract

The flow of heat is one form of Newtonian motion. In this project forced convection was investigated in a three dimension rectangular enclosure with heaters placed on opposite walls, two windows on the adjacent opposite walls, and one fan centrally fixed at the top (ceiling).The fan was set to rotate at constant speed. To analyze the flow and heat transfer rates, a complete set of non -dimensional zed equations governing Newtonian fluid and boundary conditions were presented in vector form to eliminate the need for solving the continuity equations. A boussineque fluid motion in a three dimensional cavity is considered. The governing equations with boundary conditions were described using three point central difference approximations for a non-uniform mesh. The resulting finite difference equations are then solved using MATLAB simulation software. The results were presented on graphs to show velocity profiles and temperature distribution in a room.