An experimental investigation of artificial supercavitation generated by air injection behind disk-shaped cavitators

Byoung Kwon Ahn, So Won Jeong, Ji Hye Kim, Siyao Shao, Jiarong Hong, Roger E.A. Arndt

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

In this paper, we investigated physical characteristics of an artificial supercavity generated behind an axisymmetric cavitator. Experiments for the same model were carried out at two different cavitation tunnels of the Chungnam National University and the University of Minnesota, and the results were compared and verified with each other. We measured pressures inside the cavity and observed the cavity formation by using a high-speed camera. Cavitation parameters were evaluated in considering blockage effects of the tunnel, and gravitational effects on supercavity dimensions were examined. Cavity dimensions corresponding to the unbounded cavitation number were compared. In addition, we investigated how artificial supercavitation develops according to the combination of injection positions and direction.

Original languageEnglish (US)
Pages (from-to)227-237
Number of pages11
JournalInternational Journal of Naval Architecture and Ocean Engineering
Volume9
Issue number2
DOIs
StatePublished - Mar 2017

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) under Grant No. 2014M3C1A9060786 and Ministry of Defense (Advanced Naval Vessels Research Laboratory and Civil Military Technology Center).

Keywords

  • Artificial supercavitation
  • Blockage effect
  • Cavitation tunnel
  • Cavitator
  • Gravitational effect
  • Supercavitation

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