Visualization of the Flow Around a Square Section Cylinder by a CAFV Technique

The flows around the square section cylinder with different inclined angle were measured with a parallel triple hot-wire probe. The near wake of each cylinder was visualized by applying phase averaging and CAFV Techniques, The vorticity fields were calculated from the measured velocity vector fields and they were also visualized as animation for more easier understanding of the flow field. It was confirmed that the characteristics of the flow field around the cylinder, not only a vortex shedding but also the length of the formation region and the strength of shedding vortices, were effectively affected by inclination of the cylinder.