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  • 标题:Vibration and flow characteristics near cavitation occurrence in mixed-flow pump
  • 本地全文:下载
  • 作者:H M Yang ; K Y Lee ; J H Kim
  • 期刊名称:IOP Conference Series: Earth and Environmental Science
  • 印刷版ISSN:1755-1307
  • 电子版ISSN:1755-1315
  • 出版年度:2019
  • 卷号:240
  • 期号:6
  • 页码:1-9
  • DOI:10.1088/1755-1315/240/6/062032
  • 出版社:IOP Publishing
  • 摘要:Cavitation phenomena in a mixed-flow pump are studied using computational fluid dynamics and experiment. Steady-state and transient analyses are conducted using three-dimensional Reynolds-averaged Navier-Stokes equations with a turbulence kinetic energy-specific rate of dissipation (k-ω)-based shear stress transport turbulence model and the homogeneous cavitation model. To observe the pressure fluctuation, five points are monitored during computation. In experiment, a three-axis accelerometer is used for cavitation detection and the vibration characteristics are analyzed. When cavitation occurs, the pressure and vibration magnitudes fluctuate considerably near the blade passing frequency.
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