Abstract
The objective of this study is to understand aerodynamic characteristics of the three dimensional flow around square cylinder with grooves. Especially, we focus on dependency on the characteristics of three dimensional flows. We carried out wind tunnel tests for the measurements of drag forces, which act on a 2D and a 3D square cylinder. Experimental investigations on the flow around square cylinders were carried out in the range of 5.6×10^4≦Re≦1.69×10^6. As a result, drag coefficient reduction of a square cylinder with groove is lower in 3D flow compared to 2D flow.
