抄録
In petroleum plants flammable gas is massively produced as a by-product in refining gasline, diesel oil and etc. Such unnecessary gas in high pressure is released by a regulation valve into a pipe connected to a flare system. Under a certain condition, the pipe violently vibrates with loud noise which leads to the fatigue of the pipe system in a short time. The vibration of the pipe is caused by acoustic energy radiated from the valve and resonates with the gas in the pipe, which is referred to as Acoustic Induced Vibration. In the present study, a pipe is experimentally vibrated by sound wave emitted with different frequencies and the strain of pipe is measured in order to elucidate the mechanism of destruction of pipe. As a result, it is shown that the resonance between fluid in a pipe and the pipe wall may occur with the same natural frequency and the same wave number.
