EXPERIMENTAL INVESTIGATION OF THE VIBRATIONS OF A SIMPLY SUPPORTED ROD IMMERSED IN AN AXIAL FLOW WITH A NOZZLE MIDWAY

Abstract

Experiments to study the induced vibrations of a simply supported rod resulting from an axial flow with a constricting nozzle midway are described. Nozzles with different geometries are used. The results are compared to published data in the literature. It is shown that the vibration of this rod for a particular flow velocity beyond the critical value changes both direction and trajectory. It is also shown that machining cuts on a particular mounted nozzle helps suppress the amplitude of the flow induced vibrations.