Three-Dimensional Structures in the Wake of a Two-Dimensional Body with Various Separation Angles

Abstract

Three-dimensional structures such as longitudinal vortex appeared in the two-dimensional vortex street wake of a columnar body are very complex structures. It is very important to understand the origin and growth process of the three-dimensional structure in the two-dimensional vortex street wake. The purpose of this study is to investigate the three-dimensional structures in the two-dimensional vortex street wake by flow visualization. As the results, the details of the three-dimensional structures depending on the Reynolds number and the separation angle from a body were clarified.