An Experimental Study on the Characteristics of Flow in the Wake of a Single Prolate Spheroid and Arrays of Prolate Spheroids in Unidirectional Flow

There are a few experimental studies on the flow past porous media due to its difficulties of measurement without disturbing the flow. In particular, there have been very few studies on the relationship between the shape of the objects constituting the porous media and the turbulence generated in the passing flow. In this study, the characteristics of the flow past a spheroid and arrays of spheroids were investigated by carrying out hydraulic experiments using the PTV technique. It was clarified that the complicated velocity field with the organized vortex and fluctuations with wide range of frequency occurs in the wake of them. According to a series of velocities, the different organized vortex is generated behind a spheroid and the rows of spheres.