抄録
Experimental study was performed to investigate flow characteristics near a shear layer in intersecting region of diverging streams in multiple diamond-shaped islands. The wake flow in intersecting region were visualized using the fluorescein dye illuminated by a laser light sheet. The velocity variations in flow field were measured using two-dimensinal laser Doppler velocimetry. It is found that the difference of flow patterns depends on the arrangement of the diamond-shaped islands, the Reynolds number and the existence of the turbulence mesh. The characteristics of velocity variations in the intersecting region are also clarified.