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Correlation equation for the marine drag coefficient and wave steepness

机译：海洋阻力系数与波浪陡度的相关方程

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摘要

This work questions, starting from dimen sional considerations, the generality of the belief that the marine drag coefficient levels off with increasing wind speed. Dimensional analysis shows that the drag coefficient scales with the wave steepness as opposed to a wave-age scaling. A correlation equation is employed here that uses wave steepness scaling at low aspect ratios (inverse wave steepnesses) and a constant drag coefficient at high aspect ratios. Invoked in support of the correlation are measurements sourced from the literature and at the FINO1 platform in the North Sea. The correlation equation is then applied to measure ments recorded from buoys during the passage of hurri canes Rita, Katrina (2005) and Ike (2008). Results show that the correlation equation anticipates the expected levelling off in deeper water, but a drag coefficient more consistent with a Charnock type relation is also possible in more shallower water. Some suggestions are made for proceeding with a higher-order analysis than that conducted here.
机译：这项工作从多维的角度出发，质疑了海洋阻力系数随风速增加而趋于平稳的观点的普遍性。尺寸分析表明，阻力系数与波陡度成比例，而不是与波龄成比例。这里采用一个相关方程，该方程在低纵横比下使用波陡度缩放（逆波陡度），在高纵横比下使用恒定的阻力系数。为支持相关性而调用的是来自文献和北海FINO1平台的测量值。然后，将相关方程式应用于测量飓风手杖Rita，Katrina（2005）和Ike（2008）通过时从浮标上记录的浮游物。结果表明，相关方程可以预测在更深水中的预期水平，但是在更浅水中，阻力系数与夏诺克式关系更一致。提出了一些建议，以进行比此处进行的更高阶的分析。

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