1999 Volume 42 Issue 3 Pages 355-361
This paper deals with an experimental study of a turbulent cylindrical wall jet with a front-facing step equipped at an arbitrary location on the cylindrical wall, in order to disturb the flow near the wall and to cantrol the thickness of the wall shear layer. This report is mainly concerned with our search for the effects on the separation and reattachment properties of the jet flow in the region before and after a step with various heights and locations. The variations in the static pressures on the cylindrical wall surface, jet half-widths and boundary layer thicknesses in the downstream direction were examined. The relationships among the separation point from the cylindrical wall, the reattachment point and the nozzle-step distance were obtained. The results were compared with those already obtained for an ordinary cylindrical wall jet without the step. Furthermore, the flow patterns in the x-y plane normal to the wall in the region before and after the step were visualized by an oil film method.
JSME international journal. Ser. 1, Solid mechanics, strength of materials
JSME international journal. Ser. A, Mechanics and material engineering
JSME international journal. Ser. 3, Vibration, control engineering, engineering for industry
JSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing
JSME International Journal Series A Solid Mechanics and Material Engineering