抄録
This research has been performed to clarify the oscillation of a separating shear layer over a cavity formed peripherally on a cylinder in a uniform axial stream. Experiments have been carried out for the cavity of a width-to-depth ratio of 4 in a water channel. Measurements have been made along the shear layer using UVP monitor. The spatio-temporal behaviors of the separated shear layer are examined with POD and orthonormal wavelet transform. Maps of the mean velocity vector and vorticity are shown from the PIV measurement.
