Abstract
The characteristics of a steady axial flow around a stepped cylinder with small attack angle was investigated by means of the flow visualization technique of the smoke method at the Reynolds numbers less than 2×105. The experiments were carried out with the protrusion step length of the cylinder between -1.5mm and 16mm. The attack angle of cylinder model has an maximum value of 5 degrees. The pressure distributions on the cylinder surface were measured with respect to the two cases at the velocity of 15m/s and 30m/s.
