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arXiv 0903.4813physics.flu-dynphysics.geo-ph
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非零常涡量对毛细水波非线性共振的影响

Effect of non-zero constant vorticity on the nonlinear resonances of capillary water waves

Adrian Constantin, Elena Kartashova

摘要:

研究了下垫面流对毛细水波三波相互作用的影响。在无旋流中,共振3波相互作用是不可能的,这一事实可以通过存在一个恒定的非零涡量的基本流而无效。我们证明:1)只有在二维流动中才可能出现具有常非零涡量的波列; 2)只有正的常涡量才能触发三波共振的出现; 3)触发共振的正的常涡量的数目是可数的; 4)触发共振的正的常涡量的大小不能太小。

英文摘要:

The influence of an underlying current on 3-wave interactions of capillary water waves is studied. The fact that in irrotational flow resonant 3-wave interactions are not possible can be invalidated by the presence of an underlying current of constant non-zero vorticity. We show that: 1) wave trains in flows with constant non-zero vorticity are possible only for two-dimensional flows; 2) only positive constant vorticities can trigger the appearance of three-wave resonances; 3) the number of positive constant vorticities which do trigger a resonance is countable; 4) the magnitude of a positive constant vorticity triggering a resonance can not be too small.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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