PIV Analysis of vortex shedding from a circular cylinder deflected by a Splitter plate

Abstract

This paper describes how the wake behind a circular cylinder as a splitter plate approaches the cylinder. Measurements were conducted in a water tank at Re=1.12×10⁴ based on the diameter of the cylinder. As the splitter plate was traversed horizontally at three levels from a far-off position, in an early stage the base suction increases gradually, but in fell critically at a certain position depending on the level. To make clear the mechanism of the critical change. PIV measurements were conducted for pre- and post-critical régime. It was found that the formation length changes in accordance with the variation of the base pressure