抄録
The motion of asphere falling through still fluid and the vortex shedding were experimentally invesigated. The sphere falls with little spin driven on guid railway or without spin. The motion of sphere was recorded by two cameras set at right angle and the trajectory and the rotation of sphere were analyzed to obtain the velocity and thecirculation. The vortex shedding from falling sphere and fixed sphere in uniform flow may be identical under the fact that the strouhal number were almost same values and the shape of wake were similer. But the shedding point of vortex were under the control of the rotation of falling sphere, as the results of this control, the trajectory of falling sphere was a sine curve in some vertical plane.
