Wake characterization of the forced rotational oscillation of a circular cylinder with an attached splitter plate for consistent periodic vortex shedding

An experimental study of a circular cylinder with an attached splitter plate of length equal to two cylinder diameters is presented. The cylinder-splitter plate assembly is forced to oscillate at frequencies near the natural von Karman shedding frequency at various angular amplitudes to remove variations in the vortex shedding frequency normally present in cylinder experiments. The size, spacing, and strength of vortices downstream of the oscillating cylinder assembly are compared with the static cylinder case.