Velocity measurement of abrasive waterjet by a combination of PIV and PTV

Toshihiro Sawamura, Yu Fukunishi, Ryoji Kobayashi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The measurements of the velocities of water and abrasive particles in abrasive waterjet are carried out. Double-exposured photographs of the abrasive waterjet are taken using a red flash and a blue flash. The water velocity is obtained by the PIV method that evaluates the cross-correlations between the red images and the blue images extracted from the photographs. For the measurement of the abrasive particle velocities, PTV method, that traces the movement of each particle in the photograph, is employed. The velocities of water and abrasive particles are successfully measured by this system. The relation between the cutting capability and the kinetic energy of water and abrasive particles are examined. It is also shown that the condition of abrasive waterjet can be classified into three regions in respect to the abrasive flow rate.

Original languageEnglish
Pages (from-to)50-56
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume66
Issue number641
DOIs
Publication statusPublished - 2000 Jan

Keywords

  • Abrasive waterjet
  • Digital image processing
  • Flow measurements
  • Jet
  • Multi-phase flow
  • PIV
  • PTV

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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