Void fraction measurements in breaking waves

C.E. Blenkinsopp, J.R. Chaplin

Research output: Contribution to journalArticlepeer-review

112 Citations (SciVal)


This paper describes detailed measurements and analysis of the time-varying distribution of void fractions in three different breaking waves under laboratory conditions. The measurements were made with highly sensitive optical fibre phase detection probes and document the rapid spatial and temporal evolutions of both the bubble plume generated beneath the free surface and the splashes above. Integral properties of the measured void fraction fields reveal a remarkable degree of similarity between characteristics of the two-phase flow in different breaker types as they evolve with time. Depending on the breaker type, the energy expended in entraining air and generating splash accounts for a minimum of between 6.5 and 14% of the total energy dissipated during wave breaking.
Original languageEnglish
Pages (from-to)3151-3170
Number of pages20
JournalProceedings of the Royal Society of London Series A - Mathematical Physical and Engineering Sciences
Issue number2088
Publication statusPublished - 8 Dec 2007


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