Capillary driven fragmentation of large gas bubbles in turbulence

Aliénor Rivière, Daniel J. Ruth, Wouter Mostert, Luc Deike, Stéphane Perrard

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The bubble size distribution below a breaking wave is of paramount interest when quantifying mass exchanges between the atmosphere and oceans. Mass fluxes at the interface are driven by bubbles that are small compared with the Hinze scale dh, the critical size below which bubbles are stable, even though individually these are negligible in volume. Combining experimental and numerical approaches, we report a power-law scaling d-3/2 for the small bubble size distribution, for sufficiently large separation of scales between the injection size and the Hinze scale. From an analysis of individual bubble breakups, we show that small bubbles are generated by capillary effects, and that their breakup time scales as d3/2, which physically explains the sub-Hinze scaling observed.

Original languageEnglish (US)
Article number083602
JournalPhysical Review Fluids
Volume7
Issue number8
DOIs
StatePublished - Aug 2022

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Modeling and Simulation
  • Fluid Flow and Transfer Processes

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