Abstract
The evalution methodologies for the flow-induced vibration instability of a long flexible rod due to the axial leakage-flow are reported. In this paper we deal with the rod as a continuous fiexible body. The relation between the axial velocity and the unstable phenomena are clarified. Concerning the critical flow velocity, the root locus(Argand diagram)is shown. As a result, the design criteria for the axial leakage flow are described. We compared our results with the experimental results.
