論文

査読有り 本文へのリンクあり
2018年4月

Laboratory measurements of heat transfer and drag coefficients at extremely high wind speeds

Journal of Physical Oceanography
  • Satoru Komori
  • ,
  • Koji Iwano
  • ,
  • Naohisa Takagaki
  • ,
  • Ryo Onishi
  • ,
  • Ryoichi Kurose
  • ,
  • Keiko Takahashi
  • ,
  • Naoya Suzuki

48
4
開始ページ
959
終了ページ
974
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1175/JPO-D-17-0243.1
出版者・発行元
AMER METEOROLOGICAL SOC

© 2018 American Meteorological Society. Heat and momentum transfer across the wind-driven breaking air-water interface at extremely high wind speeds was experimentally investigated using a high-speed wind-wave tank. An original multi-heatbalance method was utilized to directly measure latent and sensible heat transfer coefficients. The results show that both heat transfer coefficients level off at low and normal wind speeds but increase sharply at extremely high wind speeds. The coefficients have a similar shape for wind speeds at a height of 10m. Therefore, the wind speed dependence on the latent and sensible heat transfer coefficients can be represented by that of the enthalpy coefficient even in the extremely high-speed region. To show how significantly the drag and enthalpy coefficients affect the intensity of tropical cyclones, the coefficients were applied to Emanuel's analytic model. The analytic model shows that the difference between the present laboratory and conventional correlations significantly affects the maximum storm intensity predictions, and the present laboratory enthalpy and drag coefficients have the remarkable effect on intensity promotion at extremely high wind speeds. In addition, the simulations of strong tropical cyclones using the Weather Research and Forecasting (WRF) Model with the present and conventional correlations are shown for reference in the appendix. The results obtained from the models suggest that it is of great importance to propose more reliable correlations, verified not only by laboratory but also by field experiments at extremely high wind speeds.

リンク情報
DOI
https://doi.org/10.1175/JPO-D-17-0243.1
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85047370488&origin=inward 本文へのリンクあり
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85047370488&origin=inward
ID情報
  • DOI : 10.1175/JPO-D-17-0243.1
  • ISSN : 0022-3670
  • eISSN : 1520-0485
  • SCOPUS ID : 85047370488

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