论文标题
观察泰勒 - 库特流动实验中湍流的动态骨架
Observing a Dynamical Skeleton of Turbulence in Taylor-Couette Flow Experiments
论文作者
论文摘要
最近的工作表明，管理流体流的方程式不稳定的溶液在构造湍流动力学方面起着重要作用。在这里，我们提出了一种检测时间间隔的方法，其中湍流“阴影”（在空间和时间上模仿）复发溶液。我们发现，尽管该系统中相对较少的已知复发溶液数量相对较少，但在反向旋转的泰勒 - 库特流动的数值和实验观察中，阴影经常发生。我们的结果为在各种壁挂剪切流中的湍流实验基础的动力学描述奠定了基础，从而使应用适用于预测和控制。
Recent work suggests unstable recurrent solutions of the equations governing fluid flow can play an important role in structuring the dynamics of turbulence. Here we present a method for detecting intervals of time where turbulence "shadows" (spatially and temporally mimics) recurrent solutions. We find that shadowing occurs frequently and repeatedly in both numerical and experimental observations of counter-rotating Taylor-Couette flow, despite the relatively small number of known recurrent solutions in this system. Our results set the stage for experimentally-grounded dynamical descriptions of turbulence in a variety of wall-bounded shear flows, enabling applications to forecasting and control.
