Abstract
It is important to study vortex structures in the wake behind three dimensional bluff bodies. The purpose of this study is to educe vortex structures in the wake behind a circular disk which is a typical three dimensional bluff body. Three velocity components, streamwise, radial and circumferential velocity, behind the disk were measured by X-type hot wire probe. Phase averaged method provided the result that staggered-type vortex structure was a dominant vortex structure in at Re=10,000.
