Simultaneous Image Measurement of Sprays and Air Bubbles Formed during Wind Wave Breaking Event
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- OTSUKA Junichi
- Civil Engineering Research Institute for Cold Region
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- WATANABE Yasunori
- Hokkaido University, School of Engineering, Environmental Hydraulics Laboratory
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- TASHIRO Koki
- Hokkaido University, School of Engineering, Environmental Hydraulics Laboratory
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- OHYAMA Takahiro
- Hokkaido University, School of Engineering, Environmental Hydraulics Laboratory
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- SARUWATARI Ayumi
- Hokkaido University, School of Engineering, Environmental Hydraulics Laboratory
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- YAMADA Tomohito
- Hokkaido University, School of Engineering, Environmental Hydraulics Laboratory
Bibliographic Information
- Other Title
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- 風波砕波下の飛沫と気泡の同時画像計測
- フウハサイハ カ ノ ヒマツ ト キホウ ノ ドウジ ガゾウ ケイソク
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Abstract
Sprays and air bubbles formed during wind wave breaking events under various wind conditions were simultaneously visualized using two high-speed video cameras and a back-light imaging technique. The shapes of the sprays and entrained bubbles were quantitatively measured on the basis of novel level-set image detecting algorithm. Spectrum slope of spray and bubble size were found to decrease from approximately 2.2 mm and 1.5 mm respectively. It was also found that the volume rate and wind-wave Reynolds number (RB), the number density and RB are both related to positive correlation.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 70 (2), I_41-I_45, 2014
Japan Society of Civil Engineers
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Details
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- CRID
- 1390282680295729920
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- NII Article ID
- 130004706903
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- NII Book ID
- AA12508551
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- ISSN
- 18838944
- 18842399
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- NDL BIB ID
- 025929579
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed