504 遠心羽根車のロータダイナミクス力に関する研究 : 第2報ウェアリング付き遠心羽根車におけるキャビテーション発生時の特性(翼振動・羽根車,OS-4 ロータダイナミクス)

概要

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Measurement system of fluid reaction force generated on annular pressure seal was developed, and which was applied active magnetic bearings. And from flexibility of measurement circumference by design specifications, this system can measure fluid reaction forces generating on centrifugal impeller. It's necessary for the pump designer to consider dynamic properties of flow inside impeller unit and to predict exactly machine's dynamics under various running conditions. Therefore, an object of this study is to investigate the dynamic behavior of centrifugal impeller by lowering cavitation number under constant flow rate through the control of valves. Under cavitating condition, frequency response of fluid film has non-liner properties and has a significant effect on rotordynamic stability problem. This paper suggests the importance of not ideal but fault analysis.
一般社団法人日本機械学会の論文
2004-09-27