Abstract
This paper describes a function of a splitter on flow mechanism of a switching of jet in a wall-attachment fluid amplifier.
A very simplified device was used as an experimental model and the switching mechanism in it was studied by visualizing the flow using a motion picture and by measuring pressure distributions on walls.
The mechanism of the interaction between jet and splitter was analyzed. An attachment distance, an amount of switching flow, and switching time period in the switching process were calculated from the simulation model derived from experiments. It was found that both the initial attachment distance and an amount of switching flow were varied with splitter position, since the low pressure distribution nearby the tip of the splitter eased the jet curvature. The switching of jet was restrained due to the low pressure distribution caused by the separation of streamline at the tip of the splitter in the output duct.
