심해 풍파 난류 경계층에서의 와 구조

Title
심해 풍파 난류 경계층에서의 와 구조
Alternative Title
Vortical structures in turbulent boundary layer of deepwater wind waves
Author(s)
오상호; 서경덕; 水谷夏樹
KIOST Author(s)
Oh, Sang Ho(오상호)
Publication Year
2006-08-25
Abstract
The results of experimental investigation of vortical structures in the turbulent boundary layer of deepwater wind waves are presented. With the help of relatively high-speed PIV system, subsurface velocity field of wind waves were observed and vortical structures in the flow field were visualized. Through the qualitative examination of the vortical structures, it was found that a coherent vortex is formed right underneath the wave crest and traveled in phase with the wave. The coherent vortex rotated counter-clockwise for most of the cases, but clockwise vortex was observed when apparent wave breaking occurred at the wave crest. In the near-surface region, complex vortex-vortex interactions were observed according to the traveling of the coherent vortex, whereas vortical structures far below the water surface moved little due to weak influence of the surface waves.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/30915
Bibliographic Citation
제4회 한국유체공학학술대회, pp.1 - 4, 2006
Publisher
유체기계공업학회
Type
Conference
Language
Korean
Publisher
유체기계공업학회
Related Researcher
Research Interests

Coastal engineering,Physical experiment,Coastal wave,항만공학,수리실험,연안파랑

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