Cloud Cavitation Dynamics

M Wilson, John Blake, Peter Haese

Research output: Contribution to journalArticle

3 Citations (Scopus)
183 Downloads (Pure)

Abstract

An analysis is developed for the behaviour of a cloud of cavitation bubbles during both the growth and collapse phases. The theory is based on a multipole method exploiting a modified variational principle developed by Miles ["Nonlinear surface waves in closed basins", J. Fluid Mech. 75 (1976) 418-448] for water waves. Calculations record that bubbles grow approximately spherically, but that a staggered collapse ensues, with the outermost bubbles in the cloud collapsing first of all, leading to a cascade of bubble collapses with very high pressures developed near the cloud centroid. A more complex phenomenon occurs for bubbles of variable radius with local zones of collapse, with a complex frequency spectrum associated with each individual bubble, leading to both local and global collective behaviour.
Original languageEnglish
Pages (from-to)199-208
Number of pages10
JournalThe ANZIAM Journal
Volume50
Issue number02
DOIs
Publication statusPublished - 1 Oct 2008

Keywords

  • clouds
  • multipoles
  • clusters
  • bubbles
  • cavitation

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