Ejecta evolution during cone impact

Jeremy Marston, Sigurdur T Thoroddsen

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

We present findings from an experimental investigation into the impact of solid cone-shaped bodies onto liquid pools. Using a variety of cone angles and liquid physical properties, we show that the ejecta formed during the impact exhibits self-similarity for all impact speeds for very low surface tension liquids, whilst for high-surface tension liquids similarity is only achieved at high impact speeds. We find that the ejecta tip can detach from the cone and that this phenomenon can be attributed to the air entrainment phenomenon. We analyse of a range of cone angles, including some ogive cones, and impact speeds in terms of the spatiotemporal evolution of the ejecta tip. Using superhydrophobic cones, we also examine the entry of cones which entrain an air layer.
Original languageEnglish (US)
Pages (from-to)410-438
Number of pages29
JournalJournal of Fluid Mechanics
Volume752
Issue number3
DOIs
StatePublished - Jul 7 2014

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Condensed Matter Physics

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