2434 キャビテーションサージに抑制効果のあるケーシングトリートメント : 第1報:圧力変動とストロボ撮影によるインデューサ内部流動の観察(S41-5 流体機械に関連した複雑内部流動の解析と計測(ポンプ),S41 流体機械に関連した複雑内部流動の解析と計測)  [in Japanese] 2434 Casing Treatment for Suppression of Cavitation Surge : 1st report : Observation of Inducer Internal Flow with Stroboscope  [in Japanese]

Casing treatment with an aim for the suppression of cavitation surge was experimented. For the investigation of internal flow, the observations of cavitation phenomena with stroboscope were conducted. FFT analysis showed that weak cavitation surge appeared at low cavitation numbers. However, the peak of the cavitation surge became lower level using the casing treatment. In addition, suction performance did not gradually increase, i.e., dynamic gain was almost flat.