Instantaneous structure of a breaking wave
Instantaneous structure of a breaking wave
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破碎波的瞬时结构
DOI：
10.1063/1.868113
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发表时间：
1994
影响因子：
4.6
通讯作者：
D. Rockwell
中科院分区：
文献类型：
--
作者：
J. Lin;D. Rockwell
定量的，瞬时结构的驻波在溢出模式下进行破碎的特点是使用高图像密度粒子图像测速。破碎带起源于自由表面的尖锐槽。表面的基本上不连续的斜坡，在其下方存在流动分离的情况下，作为涡量的来源，在分离的混合层中产生涡量浓度。涡度层和自由表面之间的区域是湍流的;与混合层相比，它的涡度水平微不足道。
The quantitative, instantaneous structure of a stationary wave undergoing breaking in the spilling mode is characterized using high‐image‐density particle image velocimetry. The breaker originates from a sharp trough of the free surface. The essentially discontinuous slope of the surface, in the presence of flow separation beneath it, serves as a source of vorticity, giving rise to vorticity concentrations in a separated mixing layer. The region between this vorticity layer and the free surface is turbulent; it has insignificant levels of vorticity compared to the mixing layer.