Behavior of severe cavitation erosion occurring in a high-specific-speed centrifugal pump due to vibrations and noise

Hitoshi Soyama, Li Shou-Ren, Masashi Tonosaki, Kazuo Uranishi, Hiroharu Kato, Risaburo Oba

Research output: Contribution to journalArticle

Abstract

In order to study the behavior of severe cavitation erosion occurring in a typical centrifugal pump with a high specific speed of Ns = 300 (m, m3/min, rpm), the high-frequency vibrations and noises due to such cavitation erosion are systematically investigated under various test conditions. The present erosion tests are carried out using three-dimensional impellers made of aluminum alloy. In a field where the flow rates as well as NPSH are low, the vibrating accelerations and the acoustic power sharply increase, so that severe erosion takes place in this field. A large difference in flow pattern is clearly observed with respect to the flow rate.

Original languageEnglish
Pages (from-to)3276-3281
Number of pages6
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume61
Issue number589
DOIs
Publication statusPublished - 1995 Jan 1
Externally publishedYes

Keywords

  • Cavitation
  • Erosion
  • Noise
  • Pump

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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