抄録
In this study, the flow fields of two, three or four interacting parallel supersonic free jets are studied by flow visualization using planar laser-induced fluorescence of iodine molecules seeded in carrier gas. Centers of orifices are set linearly and on vertices of a triangle or square. The flow fields are visualized on the plane including jet centerlines and in cross sections vertical to the centerlines, and are analyzed using various visual images for each geometrical arrangement of the orifices. Three-dimensional structures of the flow fields do not tend downstream to the structures expected from the arrangement of the orifices.
