Nonlinear Flow of Wave Crests Past a Thin Pile
Nonlinear Flow of Wave Crests Past a Thin Pile
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发表时间：
1976-11
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通讯作者：
R. Hallermeier
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作者：
R. Hallermeier
在周期性波浪作用下，垂直圆形桩周围的峰值水线的测量模式与波散射理论不一致，当桩半径与波长相比非常小时，表现出对入射波高的非线性依赖性。在相对较浅的水中，在各种入射实验室波的情况下，测量了几种直径的桩周围的峰值水线。的图案的特征表明，像船的船头波的形式在峰值峰值流量时，一定的弗劳德数，入射波峰速度头除以桩半径，变得很大，在0.1 - 1.0的顺序的扰动。实验室试验应再现海岸和海洋工程感兴趣的情况下的基本流动效应，因为现场和实验室情况具有相同的弗劳德数，这意味着几何流动相似。
The measured pattern of peak water line around a vertical circular pile in periodic wave action can disagree with wave-scattering theory, showing a nonlinear dependence on incident wave height when the pile radius is very small compared to the wavelength. The peak water line was measured around piles of several diameters in relatively shallow water with various incident laboratory waves. Features of the patterns indicate that a disturbance like a ship's bow wave forms during peak crest flow when a certain Froude number, incident crest velocity head divided by pile radius, becomes large, on the order of 0.1 - 1.0. The laboratory tests shoudl reproduce basic flow effects in situations of coastal and ocean engineering interest, because field and lab situations have the same Froude number, implying geometric flow similarity.