Abstract
The structure of vortex street in the wake of a circular cylinder was studied by using flow visualization and hot-wire technique in a low-speed wind tunnel. The lateral position of the center of a vortex in the vortex street in the visualized flow pattern is in good agreement with the lateral position of the inflection point of mean velocity distribution and also that of the maximum of vorticity distribution. However, the lateral position of the maximum turbulence intensity does not coincide with that of the center of a vortex, but it is in good agreement with the lateral position of the half value of vorticity distribution. The lateral position of the edge of the vortex core is farther outside of the position of the maximum turbulence intensity.
