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

Natsuki Mizutani, Noriaki Hashimoto

Research output: Contribution to conferencePaperpeer-review

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
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
Country/TerritoryUnited States
CityHonolulu, HI
Period5/25/025/30/03

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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