Observations of Severely Erosive Vortex Cavitation in a Centrifugal Pump

Hitoshi Soyama, Tomoyoshi Okamura, Sumio Saito, Hiroharu Kato, Risaburo Oba

Research output: Contribution to journalArticlepeer-review

Abstract

In order to predict pump erosion practically, severe erosion is systematically and precisely observed in a typical centrifugal pump of specific speed Ns = 150(m, m3/min, rpm) in various test conditions in relation to types of cavitation, by means of erosion-depth measurements, noise detections, and cavitation-pressure pulse measurements through the paint method as well as the pressure-sensitive film method. The severe erosion directly result from the vortex cavitation, and the erosion rates are closely related to the size and the occurrence frequency of the vortex cavitation.

Original languageEnglish
Pages (from-to)1140-1144
Number of pages5
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume59
Issue number560
DOIs
Publication statusPublished - 1993
Externally publishedYes

Keywords

  • Bubble
  • Cavitation
  • Erosion
  • Flow Visualization
  • Internal Flow
  • Pump
  • Vortex

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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