Influence of Drag on Flow Past Two Side-by-Side Square Cylinders

Abstract

Nowadays, high-rise buildings are not isolated but situated close to other building. These structures can get energy from surrounded flow and cause flow induced oscillation under certain circumstances. Flow interference between the bodies depends on various factors such as body geometry, spacing ratio, reduced velocity, supports and end conditions of the arrangement. Influence of drag on such bodies plays a major role. Drag coefficient have been found out for Reynolds number 100 and 200 for varying spacing ratio for flow past two square cylinders of different size with corner modification. Results showed that in case of larger upstream and smaller downstream cylinders, drag coefficient for the downstream cylinder is less compared to the upstream cylinder for square cylinders when compared to corners rounded cylinders whereas, square cylinders with corners chamfered lies in between them. In case of smaller upstream and larger downstream cylinders, drag coefficient for the downstream cylinder is more compared to the upstream cylinder for square cylinders when compared to corners rounded cylinders whereas, square cylinders with corners chamfered lies in between them.