5. Damping of Cylindrical Structures in Single-Phase Fluids

Several flow-induced vibration excitation mechanisms may lead to severe vibration in heat exchangers and other process equipment. These mechanisms are fluidelastic instability, periodic wake shedding, turbulence excitation, and acoustic resonance. Excessive flow-induced vibration may cause failures either by fatigue or fretting wear. To avoid such problems, a thorough flow-induced vibration analysis considering all the above vibration excitation mechanisms should be carried out at the design stage. Such analyses require information about damping.