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

Fingerprint

Air
Flow separation
Vortex flow
Flow fields
Water

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)

Air Flow Characteristics over Wind Waves from Measurements by the PIV Technique. / Mizutani, Natsuki; Hashimoto, Noriaki.

Proceedings of the International Offshore and Polar Engineering Conference. 2003. p. 1598-1602.

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

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, Proceedings of the Thirteenth (2003) International Offshore and Polar Engineering Conference, Honolulu, HI, United States, 5/25/02.
Mizutani N, Hashimoto N. Air Flow Characteristics over Wind Waves from Measurements by the PIV Technique. In Proceedings of the International Offshore and Polar Engineering Conference. 2003. p. 1598-1602
Mizutani, Natsuki ; Hashimoto, Noriaki. / Air Flow Characteristics over Wind Waves from Measurements by the PIV Technique. Proceedings of the International Offshore and Polar Engineering Conference. 2003. pp. 1598-1602
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