Transversal flow induced vibration of tube bundles

The vibrations induced in tube array by a transversal flow are of great practical interest because of their destruction effects especially on heat exchanger. Through turbulence can significantly excite the tube by itself, most intense vibrations are still caused by fluidelastic phenomena. The study described in this paper gives important information concerning the characteristics of these phenomena. A lot of bundlle mock-ups with various pitches have been tested in air. Large range parameter domains have been investigated (flow velocities, velocity profiles, natural frequencies and damping ratios of tubes, etc ...)