抄録
The flow around a semi-infinite circular cylinder placed at various specings to a flat plate has been investigated experimentally. The cylinder was aligned with its axis normal to the flat plate and to the free stream. Then, the pressure distributions along the plate were measured and the flow patterns were visualized using the oil-film-technique at a Reynolds number of 2.9×10 4.While, the flow around the cylinder was visualized using the liquid-parafine-mist-technique at a Reynolds number of 330. When the gap was small, three flow patterns occurred around the cylinder : horseshoe-like vortex, symmetrical vortex and Karman vortex, and one or two separation points along the plate were observed too.
