Abstract
This paper deals with the active control of flow induced vibrations generated in flexible dump diffusers. The flow induced vibrations are suppressed by the feedback to the injection of the fluid at the inlet of the passage. The instability boundary of the system with the active control is examined with varying the controller gain and phase-shift angle on the vibration displacement signal. As a result, it is indicated experimentally that the active feedback control technique suppresses the flow induced vibrations effectively.
