New wave generation
New wave generation
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新浪潮一代
DOI：
10.1017/s0022112010002454
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发表时间：
2010
影响因子：
3.7
通讯作者：
T. Dauxois
中科院分区：
文献类型：
--
作者：
M. Mercier;D. Martinand;M. Mathur;L. Gostiaux;T. Peacock;T. Dauxois
我们提出了一个综合的实验和数值研究的结果产生的内波使用新的内波发生器设计的Gostiaux等。流体，第42卷，2007年，第42页。123-130）。这种机制涉及由振荡板组成的可调谐源，迄今为止已用于内波的一些基础研究，但其全部潜力尚未实现。我们的研究表明，这种方法是能够产生各种各样的二维波场，包括平面波，波束和离散的垂直模式在有限深度的分层。通过有限数量的板，强迫振幅和传播角度的离散化的影响进行了研究，它被发现，该方法是非常有效的，尽管迫使只有一个速度分量在一个可控的方式产生一个完整的波场。我们还发现，辐射波场的性质是很好地预测使用的波发生器的空间结构的傅立叶变换。
We present the results of a combined experimental and numerical study of the generation of internal waves using the novel internal wave generator design of Gostiaux et al. (Exp. Fluids, vol. 42, 2007, pp. 123–130). This mechanism, which involves a tunable source composed of oscillating plates, has so far been used for a few fundamental studies of internal waves, but its full potential is yet to be realized. Our study reveals that this approach is capable of producing a wide variety of two-dimensional wave fields, including plane waves, wave beams and discrete vertical modes in finite-depth stratifications. The effects of discretization by a finite number of plates, forcing amplitude and angle of propagation are investigated, and it is found that the method is remarkably efficient at generating a complete wave field despite forcing only one velocity component in a controllable manner. We furthermore find that the nature of the radiated wave field is well predicted using Fourier transforms of the spatial structure of the wave generator.