Study on flow induced vibration of a tube array by a two-phase flow (1st report: Large amplitude vibration by air-water flow)
スポンサーリンク
概要
- 論文の詳細を見る
Large amplitude vibration caused by a high-speed air water two-phase flow is investigated. It is thought to be the same phenomenon as fluid-elastic vibration. However, it intermittently occurs and is not so great as to damage the tubes. Small-size test tube bundles, whose natural frequencies are tuned to adequate low frequencies, are excited by an air-water two-phase flow. The air velocity is increased step by step, while the water velocity is kept constant. The amplitude of the tubes is gradually increased with the increase of flow velocity, and is not abruptly changed as is likely by the single-phase flow. However, the phenomenon can be distinguished from random excitation. The method to decide the threshold velocity of this new type of instability is proposed by comparison with the test results of the single-phase flow.
- 一般社団法人 日本機械学会の論文
一般社団法人 日本機械学会 | 論文
- PREFACE
- Hybrid Vibration Suppression of Flexible Structures Using Piezoelectric Elements and Analog Circuits
- Application of Momentum Exchange Impact Dampers to Forging Machine
- アルミニウム繊維層を設置した流路の熱伝達と圧力損失特性
- 地震荷重下における配管のき裂進展評価手法の提案