Abstract
In order to investigate the generating mechanism of the Karman vortex, the flow visualization experiment of the around of a circular cylinder with splitter plate was performed. Six kinds of circular cylinders with splitter plate were prepared. The main flow velocity was set as 0.04 m.s−1 (corresponding Reynolds number is 560), the oscillating amplitude ratio and the oscillation frequency ratio were varied about each circular cylinder with splitter plate, and the visualization experiment was performed. The dye oozing streak method was used as the technique of visualization. As a result, ten kinds of typical flow patterns of the oscillating circular cylinder with splitter plate were obtained. It was a simultaneous vortex shedding type lock-in in most cases of carrying out a lock-in. In order to discharge vortices alternately, it was found that the information on the mutual vortex flow of a wake is required.
Published Version
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