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Experimental Study on Wind-Wave Momentum Flux in Strongly Forced Conditions

机译：强力条件下风速动量通量的实验研究

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摘要

A quantitative description of wind-wave momentum transfer in high wind conditions is necessary for accurate wave models, storm and hurricane forecasting, and models that require atmosphere-ocean coupling such as circulation and mixed layer models. In this work, a static pressure probe mounted on a vertical wave follower to investigate relatively strong winds (U_10 up to 26.9 m s~-1 and U_10IC_p up to 16.6) above waves in laboratory conditions. The main goal of the paper is to quantify the effect of wave shape and airflow sheltering on the momentum transfer and wave growth. Primary results are formulated in terms of wind forcing and wave steepness ak, where a is wave amplitude and k is wave number. It is suggested that, within the studied range (ak up to 0.19), the airflow is best described by the nonseparated sheltering theory. Notably, a small amount of spray and breaking waves was present at the highest wind speeds; however, their effect on the momentum flux was not found to be significant within studied conditions.
机译：对于精确的波浪模型，风暴和飓风预报以及需要大气-海洋耦合的模型（例如环流和混合层模型），必须对高风条件下的风浪动量传递进行定量描述。在这项工作中，在实验室条件下，将一个静压探头安装在垂直波随动器上，以调查波浪上方相对较强的风（U_10达26.9 m s〜-1，U_10IC_p达16.6）。本文的主要目的是量化波浪形和气流遮挡对动量传递和波浪生长的影响。主要结果由风力和波陡ak表示，其中a是波幅，k是波数。建议在研究范围内（最大不超过0.19），最好用非分离式掩蔽理论来描述气流。值得注意的是，在最高风速下会出现少量喷雾和破碎波。然而，在研究条件下，它们对动量通量的影响并不显着。

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  • 来源
    《Journal of Physical Oceanography》 |2011年第7期|p.1328-1344|共17页
  • 作者

    Ivan B.Savelyev; Brian K.Haus; Mark.A.Donelan;

  • 作者单位

    U.S. Naval Research Laboratory, Washington, D.C.;

    Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida;

    Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida;

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