On the Disintegration of the Jet in a Plunging Breaker
On the Disintegration of the Jet in a Plunging Breaker
复制标题
切入式破碎机中射流的解体
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
M. Longuet
中科院分区：
文献类型：
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作者：
M. Longuet
摘要提出了一种在下沉表面波中射流破碎的无粘性机理。由于薄喷流的拉伸和法向压力梯度的急剧减小，原始表面的流向扰动迅速增长。这将横向重力波转化为几乎纯的毛细管波。因此，微扰的波作用守恒意味着微扰幅度的强烈增加。
Abstract An inviscid mechanism is proposed for the breakup of the jet in a plunging surface wave. Streamwise perturbations of the original surface are shown to grow rapidly owing to stretching of the thin jet and to drastic reduction in the normal pressure gradient. This converts transverse gravity waves into almost pure capillary waves. Conservation of wave action for the perturbations then implies a strong increase in the perturbation amplitude.