Air Flow Characteristics over Wind Waves from Measurements by the PIV Technique

Natsuki Mizutani, Noriaki Hashimoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Air-flow field over actual wind waves close to water surface was successfully measured using the PIV technique under a strong wind condition where the mean wind speed exceeds 10 m/s. It was found that the air-flow separation and the large-scale vortex are generated in front of breaking wind waves. A magnitude of the large-scale vortex corresponds to the amplitude of the breaking wind wave. The air-flow separation with inverse flow is generated for incipient wave breaking. Airflow separation with inverse flow was obtained in only 6% of all the studied cases, and progressive breaking wind waves without separation was obtained in about 60% of the cases.

Original languageEnglish
Title of host publicationProceedings of the International Offshore and Polar Engineering Conference
Pages1598-1602
Number of pages5
Publication statusPublished - 2003
Externally publishedYes
EventProceedings of the Thirteenth (2003) International Offshore and Polar Engineering Conference - Honolulu, HI, United States
Duration: May 25 2002May 30 2003

Other

OtherProceedings of the Thirteenth (2003) International Offshore and Polar Engineering Conference
CountryUnited States
CityHonolulu, HI
Period5/25/025/30/03

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All Science Journal Classification (ASJC) codes

  • Ocean Engineering

Cite this

Mizutani, N., & Hashimoto, N. (2003). Air Flow Characteristics over Wind Waves from Measurements by the PIV Technique. In Proceedings of the International Offshore and Polar Engineering Conference (pp. 1598-1602)