Stability Analysis of Cavitation Surge in Hydraulic System Considering Response Delay of Cavitating Pump
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- Nemoto Kanata
- Department of Mechanical Engineering, Saitama University
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- Kang Donghyuk
- Department of Mechanical Engineering, Saitama University
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- Kambayashi Izuru
- Department of Mechanical Engineering, Saitama University
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- Tsuru Wakana
- Institute of Ocean Energy, Saga University
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- Watanabe Satoshi
- Department of Mechanical Engineering, Kyushu University
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- Yokota Kazuhiko
- Department of Mechanical Engineering, Aoyama Gakuin University
説明
Cavitation surge is a system instability caused by mutual interference between cavitation and a hydraulic system. A stability analysis for the cavitation surge was performed based on the unsteady characteristics of the cavitating pump, that is, the response delay of the pressure rise against the suction and discharge flow and suction pressure oscillations. Ordinary differential equations were derived from linear unsteady momentum and continuity equations, and the simplified-derived ordinary differential equations clearly show the onset criteria of stability and dynamic instabilities. The relatively short discharge and large suction pipe loss had a stabilizing effect on the cavitation surge. The positive quasi-steady suction and discharge flow gains as well as the negative quasi-steady suction pressure gain cause surge instability. The phase advance of the pressure rise against the flow and pressure oscillations also leads to surge instability.
収録刊行物
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- International Journal of Fluid Machinery and Systems
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International Journal of Fluid Machinery and Systems 15 (4), 401-410, 2022
ターボ機械協会、韓国流体機械学会、中国工程熱物理学会、国際水理学会
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詳細情報 詳細情報について
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- CRID
- 1390856815735528960
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- ISSN
- 18829554
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可
