流体関連振動が引き起こす超・低周波音現象とその技術改善

抄録

This report presents three cases that ” Flow induced Vibration Problems” including ①. vibration outbreak situation, ②. Causes, ③. Remedies, ④. Effects of remedies.
This problem suddenly occurs at the new plant under trail operation, and perplexes the managers engineer on site. Moreover, this problem is not only a technical trouble of equipment, but also an environmental problem that causes troublesome Ultra Low Frequency Sound in the surrounding residential area.The cases shown here are the case where physiological obstacle and psychological disorder on human mind and body occurred by "Ultra Low Frequency Sound" that derived from "flow induced vibration" in the aviation test facility, and the ventilation system of the power station.
And it was confirmed that the influence on mind and body at residential area was recovered completely by the remedies. And last one is the case that the destruction of the flashing tank facility of power station occurred by the flow induced vibration.