Aerodynamic Characteristics of an Inclined Square Cylinder with Corner Fins

Flow around a square cylinder with corner fins was studied to investigate the aerodynamic characteristics of the same at different angles of attack. This study simulates flow around typical building structures employed in practical situations. Flow was studied in a flow visualization water channel at a Reynolds number of 2100 with blockage ratio less than 10%. In this study, vortex formation length and vortex shedding frequency are primarily measured for various cases. From these two parameters, other aerodynamic parameters such as coefficient of base pressure, coefficient of drag, circulation content of a shed vortex, and total circulation shed at the separation point are deduced. It is found that corner fin considerably modifies the flow field of a square cylinder. Furthermore, body angle of inclination brings additional changes in the flow structures around it and in the associated aerodynamic characteristics.