Paper Title
Numerical Analysis of Wind Load on The Cross-Sections of Square, Rounded Square, Pentagonal and Octagonal Buildings

Abstract
Considering the current growth of population in many populated countries, availing the accommodation facilities within beyond for all has become one of the most challenging tasks of the modern era. To utilize available land properly, a good way is to develop high-rise buildings to hold manypopulations within the smallest places. But buildings especially those that are very tall, are prone to be damaged by wind load. To compute the accurate effect of wind load on buildings cross-section, the typical way is to test the building prototype inside of the wind tunnel. But this is not cost-effective especially for the preliminary stage of design. As such, the current study discusses the numerical analysis of wind load on cross-sections of four (4)types of geometries i,e, square, square with a faceted curve, pentagonal & octagonal buildings for different angles of attack such as 0 ˚, 10 ˚, 30 ˚,and 40˚. Here, wind load is calculated in terms of pressure coefficient, drag coefficient & lift coefficient numerically. Also, finally, the results are compared to obtain the geometry for which the coefficients are the least. It is observed that the drag coefficients become remarkably smaller in the case of a modified square, pentagonal and octagonal compared to those for a sharp-edged square cylinder. It is also found that at various angles of attack, the values of the lift coefficients were insignificant compared to those for a sharp-edged square cylinder. The results will enable engineers and architects to design building sections more efficiently. Since the results will be expressed in the non-dimensional form, they may be applied for the prototype buildings. Keywords - Building Cross-section, Drag Coefficient, Pressure Coefficient, Angle of Attack, Bluff Body.