Bubble size measurements in breaking waves using optical fiber phase detection probes

C.E. Blenkinsopp, J.R. Chaplin

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Knowledge of the two-phase flow generated by breaking waves is desirable if we are to fully understand their effect on environmental processes such as air-sea gas exchange and production of sea-salt aerosol. However, due to the difficulties in making measurements in the high void fraction bubble plumes generated immediately after breaking, little detailed information is available. This paper describes laboratory measurements of the size of bubbles entrained in the dense plumes generated by wave breaking made using a pair of highly sensitive optical fiber phase detection probes. The results compare well with those of previous authors in the low void fraction parts of the flow, and go on to include data from within the highly aerated region present in the period shortly after breaking, close to the area of most active air entrainment. The data highlights the spatial and temporal evolution of the bubble sizes within breaker generated bubble plumes and demonstrates that some large air cavities with diameters of tens of millimeters are initially entrained. It is observed that the bubbles resident within the plume rapidly decrease in size with time and distance away from the point of primary entrainment as the large cavities initially entrained are broken up into smaller bubbles.
Original languageEnglish
Pages (from-to)388-401
Number of pages14
JournalIEEE Journal of Oceanic Engineering
Volume35
Issue number2
DOIs
Publication statusPublished - Apr 2010

Fingerprint

Void fraction
Optical fibers
Air entrainment
Air
Bubbles (in fluids)
Two phase flow
Aerosols
Salts
Gases

Cite this

Bubble size measurements in breaking waves using optical fiber phase detection probes. / Blenkinsopp, C.E.; Chaplin, J.R.

In: IEEE Journal of Oceanic Engineering, Vol. 35, No. 2, 04.2010, p. 388-401.

Research output: Contribution to journalArticle

@article{66fde9c9dece4b249b7457a4db5554e4,
title = "Bubble size measurements in breaking waves using optical fiber phase detection probes",
abstract = "Knowledge of the two-phase flow generated by breaking waves is desirable if we are to fully understand their effect on environmental processes such as air-sea gas exchange and production of sea-salt aerosol. However, due to the difficulties in making measurements in the high void fraction bubble plumes generated immediately after breaking, little detailed information is available. This paper describes laboratory measurements of the size of bubbles entrained in the dense plumes generated by wave breaking made using a pair of highly sensitive optical fiber phase detection probes. The results compare well with those of previous authors in the low void fraction parts of the flow, and go on to include data from within the highly aerated region present in the period shortly after breaking, close to the area of most active air entrainment. The data highlights the spatial and temporal evolution of the bubble sizes within breaker generated bubble plumes and demonstrates that some large air cavities with diameters of tens of millimeters are initially entrained. It is observed that the bubbles resident within the plume rapidly decrease in size with time and distance away from the point of primary entrainment as the large cavities initially entrained are broken up into smaller bubbles.",
author = "C.E. Blenkinsopp and J.R. Chaplin",
year = "2010",
month = "4",
doi = "10.1109/JOE.2010.2044940",
language = "English",
volume = "35",
pages = "388--401",
journal = "IEEE Journal of Oceanic Engineering",
issn = "0364-9059",
publisher = "IEEE",
number = "2",

}

TY - JOUR

T1 - Bubble size measurements in breaking waves using optical fiber phase detection probes

AU - Blenkinsopp, C.E.

AU - Chaplin, J.R.

PY - 2010/4

Y1 - 2010/4

N2 - Knowledge of the two-phase flow generated by breaking waves is desirable if we are to fully understand their effect on environmental processes such as air-sea gas exchange and production of sea-salt aerosol. However, due to the difficulties in making measurements in the high void fraction bubble plumes generated immediately after breaking, little detailed information is available. This paper describes laboratory measurements of the size of bubbles entrained in the dense plumes generated by wave breaking made using a pair of highly sensitive optical fiber phase detection probes. The results compare well with those of previous authors in the low void fraction parts of the flow, and go on to include data from within the highly aerated region present in the period shortly after breaking, close to the area of most active air entrainment. The data highlights the spatial and temporal evolution of the bubble sizes within breaker generated bubble plumes and demonstrates that some large air cavities with diameters of tens of millimeters are initially entrained. It is observed that the bubbles resident within the plume rapidly decrease in size with time and distance away from the point of primary entrainment as the large cavities initially entrained are broken up into smaller bubbles.

AB - Knowledge of the two-phase flow generated by breaking waves is desirable if we are to fully understand their effect on environmental processes such as air-sea gas exchange and production of sea-salt aerosol. However, due to the difficulties in making measurements in the high void fraction bubble plumes generated immediately after breaking, little detailed information is available. This paper describes laboratory measurements of the size of bubbles entrained in the dense plumes generated by wave breaking made using a pair of highly sensitive optical fiber phase detection probes. The results compare well with those of previous authors in the low void fraction parts of the flow, and go on to include data from within the highly aerated region present in the period shortly after breaking, close to the area of most active air entrainment. The data highlights the spatial and temporal evolution of the bubble sizes within breaker generated bubble plumes and demonstrates that some large air cavities with diameters of tens of millimeters are initially entrained. It is observed that the bubbles resident within the plume rapidly decrease in size with time and distance away from the point of primary entrainment as the large cavities initially entrained are broken up into smaller bubbles.

UR - http://www.scopus.com/inward/record.url?scp=77952957573&partnerID=8YFLogxK

UR - http://ShowEdit http://dx.doi.org/10.1109/JOE.2010.2044940

UR - http://www.scopus.com/inward/record.url?partnerID=yv4JPVwI&eid=2-s2.0-77952957573&md5=8faf02230f1195a76f82db6dea751636

UR - http://dx.doi.org/10.1109/JOE.2010.2044940

U2 - 10.1109/JOE.2010.2044940

DO - 10.1109/JOE.2010.2044940

M3 - Article

AN - SCOPUS:77952957573

VL - 35

SP - 388

EP - 401

JO - IEEE Journal of Oceanic Engineering

JF - IEEE Journal of Oceanic Engineering

SN - 0364-9059

IS - 2

ER -