気泡群の間けつ吹出しによる液体貯槽スロッシングの能動的制振の実験的研究

元データ 1986-09-25 一般社団法人日本機械学会

概要

This research aimed to develop a technique to suppress a liquid sloshing vibration in a tank by injecting air bubbles in a microcomputer controlled manner. Using a rectangular tank 800 mm long, 150 mm wide, and 500 mm high, installed on an oil-hydraulic controlled shaking table, sloshing was excited by sinusoidal motion of the table and air was injected at each corner of the test tank. The timing and duration of air injection were controlled by a microcomputer using pressure signal caused by sloshing. Experiments showed that the most effective timing of air injection was at the instance when the sloshing wave was ascending form the lowest position to the equibrium one, and a small amount of air, equivalent to 1 to 3 % of water contained in the tank, was sufficient to suppress the sloshing. A scale-up test showed similar effectiveness on reducing sloshing. An argorithm for controlling air injection timing and duration was developed using knowledge obtained from the experiments.

著者

柴田 碧 独立行政法人防災科学技術研究所
原 文雄 東京理科大学工学部
柴田 碧 東京大学
柴田 碧 東京大学生産技術研究所
原 文雄 東理大
柴田 碧 東京大学生産技術研究所第2部(元)
原 文雄 東京理科大学

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