Fluid-structure interaction research consistently demonstrates that flexible, elastic conduits subjected to sufficiently high fluid flow velocities undergo fluid-elastic instability, resulting in prominent flapping or oscillatory motions.
The retrieved papers consistently support the claim that elastic structures (such as tubes or jets) experience instabilities, flutter, or oscillations (flapping) when conveying or interacting with high-velocity fluid flows. Multiple studies detail fluid-elastic instability and limit-cycle oscillations occurring beyond critical flow velocities, yielding a SUPPORTED verdict.