Unsteady Behavior on High-Speed Submerged Water-Jets and Mechanism of Impinging Erosion

Yoshiaki Yamauchi, Hitoshi Soyama, Kazunori Sato, Toshiaki Ikohagi, Risaburo Oba

Research output: Contribution to journalArticlepeer-review


Jet cutting capacity is closely related to jet structure. As is known, therefore, the more the fluctuations of the jets are amplified, the greater the destructive power is. In the present study, therefore, we try to elucidate the jet structure and the unsteady flow of high speed submerged water-jets so as to improve and to control the working capacity. We analyze the unsteady behavior of the cavitation clouds around the jets by an optical system using a He- Ne laser and a pulse height analyzer, and measure the time-averaged velocity field by a semiconductor-LDV system. The discharges of the cavitation clouds are also successfully evaluated from a spatial and temporal point of view, clarifying the systematic jet structure.

Original languageEnglish
Pages (from-to)2955-2960
Number of pages6
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Issue number577
Publication statusPublished - 1994
Externally publishedYes


  • Bubble
  • Cavitation
  • Erosion
  • Jet
  • LDV
  • Laser-Aided Diagonostics
  • Unsteady Flow

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering


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