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方案下载应用领域 | 其他 |
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This article treats of the flow motion over the so-called vortex ripples which are generated by water oscillations above a sand bed. We focus mainly our experimental works on the morphology and the dynamics of transient flow patterns above real vortex ripples. With the help of flow visualizations and Particle Image Velocimetry measurements with a high-speed video CCD camera, we test numerical simulations, which predict the existence of a secondary vortex with a streamlines representation. However, our experimental findings show only one vortical structure and validate the observations of Bagnold in 1946 (using real ripples but with no visualization and measurement) and Sand Andersen & al. in 2004 (using model ripples) with respect to the existence of a transient jet.
在一个双稳湍流涡旋火焰中,对间歇性动态的时间-频率定位
Particle-laden Taylor-Couette流:高阶转变和径向局部波浪涡旋的证据
7根杆束的流体-结构相互作用:用实验数据对比数值模拟
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