Nonlinear Energy Transfer Between Wind Waves
Nonlinear Energy Transfer Between Wind Waves
复制标题
风浪之间的非线性能量传递
DOI：
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发表时间：
1980
期刊：
影响因子：
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通讯作者：
A. Masuda
中科院分区：
文献类型：
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作者：
A. Masuda
摘要本文提出了一种计算传递函数的计算格式，与以往的研究相比，它的数值稳定性和光滑性有了很大的提高。此外，对核函数进行了详细的分析，总结了非线性能量传递的本质。然后将该格式应用于典型风浪谱。特别是对于JONSWAP光谱，目前的结果是定性相似的那些销售和Hasselmann，而不是福克斯。同时，给出了一个明确的帐户之间的差异，从Hasselmann的原始模型和那些从简化模型的Longuet-Higgins确定的传递函数。后一种模型被证明是不足以在海洋和实验室中观察到的风浪的普通频谱。还系统地研究了谱型的锐度对传递函数的影响。此外，一个例子表明，对于一个频谱表示为一个总和…
Abstract A computational scheme for calculating transfer functions is prepared, which gives much improved numerical stability and smoothness compared with previous studies. Besides, a detailed analysis is made of the kernel function, in which the essence of nonlinear energy transfer is summarized. Then the scheme is applied to typical spectra of wind waves. In particular for the JONSWAP spectrum the present results are qualitatively similar to those of Sell and Hasselmann rather than those of Fox. At the same time a clear account is given of the discrepancy between transfer functions obtained from the original model of Hasselmann and those determined from the simplified model of Longuet-Higgins. The latter model turns out to be inadequate for ordinary spectra of wind waves observed in the ocean and laboratories. Also the effects of the sharpness of the spectral form on transfer functions are examined systematically. Furthermore, an example is presented which shows that for a spectrum expressed as a sum of...