变分模式分解法估计分层流体中临界反射波internal wave
Variational Mode Decomposition for estimating critical reflected internal wave in stratified fluid
摘要：
内波反射产生的剪切在海洋条件下沉积物的输运和再悬浮中起着至关重要的作用。特别地，当这些波经历\textit{critical reflection}现象时，反射波可以产生非常大的剪切。将反射波与入射波分离是一项技术挑战，因为这两种波共享相同的时间频率。在我们的研究中，我们提供了一系列的实验测量的内波在\textit{critical reflection}配置，我们分析了它们使用2D-VMD-prox分解方法。这种分解方法适用于专门分解波的内波临界反射，显示其性能的改善，相对于先前存在的内波分解方法。能够自信地隔离反射波使我们能够将我们的结果与临界反射的粘性和非线性模型进行比较，该模型正确地描述了边界中产生的剪切速率作为实验参数的函数的依赖性。
英文摘要：
The shear resulting from internal wave reflections can play a crucial role in the transport and resuspension of sediments in oceanic conditions. In particular, when these waves undergo a \textit{critical reflection} phenomenon, the reflected wave can produce a very large shear. Separating the reflected wave from the incident wave is a technical challenge since the two waves share the same temporal frequency. In our study, we present a series of experimental measurements of internal waves in \textit{critical reflection} configuration and we analyze them using the 2D-VMD-prox decomposition method. This decomposition method was adapted to specifically decompose waves in an internal wave critical reflection, showing an improvement in its performance with respect to preexisting internal wave decomposition methods. Being able to confidently isolate the reflected wave allowed us to compare our results to a viscous and non-linear model for critical reflection, that correctly describes the dependence of the shear rate produced in the boundary as a function of the experimental parameters.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
