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Interaction of surface waves at very close wavenumbers

机译:表面波在非常接近的波数下的相互作用

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摘要

We show that interaction of two monochromatic waves at the water surface enters a different dynamic regime if their wavenumbers become very close. The study is conducted by means of a fully nonlinear wave model. In the course of evolution of the two waves, downshifting of the initial wave energy and growth of the first mode occur depending on wave steepness and dk/k. Behaviour of these features changes if dk/ k< 0.0025: both downshifting and growth rate become independent of dk/k, accompanied by rapid transfer of wave energy to large scales.
机译:我们显示,如果两个单色波的波数变得非常接近,则它们在水表面的相互作用将进入不同的动态范围。该研究是通过完全非线性的波浪模型进行的。在两个波的演化过程中,取决于波陡度和dk / k,发生初始波能量的下移和第一模式的增长。如果dk / k <0.0025,这些特征的行为就会改变:降档和增长率都与dk / k无关,伴随着波浪能快速向大规模转移。

著录项

  • 来源
    《Ocean Dynamics》 |2014年第7期|1019-1023|共5页
  • 作者单位

    Centre for Ocean Engineering, Science and Technology, Swinburne University, Melbourne 3122, Australia;

    Oceanography and Ocean Engineering Methods, 58 Nelson Rd., Lilydale 3140, Australia;

    Centre for Ocean Engineering, Science and Technology, Swinburne University, Melbourne 3122, Australia,P.P. Shirshov Institute of Oceanology, Pr. V. I., Saint-Petersburg 199053, Russia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Surface waves Nonlinear waves; Wave instability; Numerical modelling;

    机译:表面波非线性波;波浪不稳定;数值模拟;

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