The Influence of the Suction Flow in an Inactive Output Port on the Internal Flow of a Fluid Amplifier

The influence of the suction flow in an inactive output port on the internal fow of a fluid amplifier has been investigated using the hydrogen bubble method. The ratio of the suction flow rate in an inactive output port to the flow rate of the main jet is a constant regardless of the main jet Reynolds number and the offset distance. On the other hand, the ratio increases with the splitter distance. It was found that the suction flow in an inactive output port reduces the reattachment point of the main jet.