Study of Cavitation Instabilities in Double- Suction Centrifugal Pump

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概要

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• In double-suction centrifugal pumps, it was found that cavitation instabilities occur with vibration and a periodic chugging noise. The present study attempts to identify cavitation instabilities in the double-suction centrifugalpump by the experiment and Computational Fluid Dynamics (CFD). Cavitation instabilities in the tested pump wereclassified into three types of instabilities. The first one, in a range of cavitation number higher than breakdowncavitation number, is cavitation surge with a violent pressure oscillation. The second one, in a range of cavitationnumber higher than the cavitation number of cavitation surge, is considered to be rotating cavitation and causes thepressure oscillation due to the interaction of rotating cavitation with the impeller. Last one, in a range of cavitationnumber higher than the cavitation number of rotating cavitation, is considered to be a surge type instability.

• ターボ機械協会、韓国流体機械学会、中国工程熱物理学会、国際水理学会の論文

著者

• Kagawa Shusaku

  Fluid Machinery & Systems Company, EBARA Corporation

• Hatano Shinya

  Mechanical Engineering, Aoyama Gakuin University

• Kang Donghyuk

  Mechanical Engineering, Aoyama Gakuin University

• Nohmi Motohiko

  Fluid Machinery & Systems Company, EBARA Corporation

• Yokota Kazuhiko

  Mechanical Engineering, Aoyama Gakuin University

関連論文

• Study of Cavitation Instabilities in Double- Suction Centrifugal Pump

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