Numerical Analysis of Wind Flow over Various Shaped Rooftop of Buildings for Renewable Energy Application in Bangladesh

A numerical study has been conducted particularly graphical analysis to investigate wind flow above roof of the constructed structure of various shapes from side views such as the conventional structure, filleted corners, dome shaped, half wedges. The velocity contours and velocity profiles have been the points of observation to find out the shape having the efficacy to initiate the turbine rotation. In addition, the suitable location for mounting wind turbines has been illustrated and the desired roof shapes for future buildings are proposed to be constructed in Bangladesh. Computational results show that dome shaped roof delivers the maximum velocity among all the other shapes taken into consideration here. On the other hand, when corners are filleted the velocity has a relative increase than the conventional one. Case study shows that among all the cities Chittagong, Comilla and some certain places in Dhaka have the minimal wind speed to initiate the turbine to generate energy.