2017 Fiscal Year Final Research Report
Mechanisms of drag reduction over breaking air-water interface at extremely high wind speeds
| Project/Area Number |
16K18015
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Fluid engineering
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| Research Institution | University of Hyogo |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | 環境流体力学 / 微粒化 / 風波 / 砕波 / 台風 |
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| Outline of Final Research Achievements |
It is of great importance to investigate the mechanisms of momentum transfer across strongly-breaking air-sea interface in order to predict the development and decay of tropical cyclones accurately. The purpose of this study is, by applying laboratory experiments with wind-wave tanks along with numerical simulations, to investigate the mechanisms of momentum transfer across strongly-breaking air-sea interface and to develop a momentum transfer model. The results show that; (1) the development of wind waves at normal wind speeds is different from that at extremely high wind speeds; (2) the effects of air-side freestream turbulence on the development of wind waves is negligibly small; and (3) the numerical simulation with Level-set/VOF method is applicable to the development of wind waves.
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| Free Research Field |
流体工学
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