Evidence of Transient Energy and Enstrophy Cascades in Tidal Flows: A Scale to Scale Analysis
Evidence of Transient Energy and Enstrophy Cascades in Tidal Flows: A Scale to Scale Analysis
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潮汐流中瞬态能量和熵级联的证据：尺度分析
DOI：
10.1029/2022gl098043
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发表时间：
2022
影响因子：
5.2
通讯作者：
A. Stocchino
中科院分区：
文献类型：
--
作者：
A. Leo;A. Stocchino
潮流在沿海地区占主导地位，导致不同尺度的涡旋产生。利用实验室大比例尺模型模拟了有进水口和航道的潮汐系统中产生的涡旋脱落的主要过程。用滤波空间技术分析了非线性能量/拟能传递速率，并通过测量的速度场的流动尺度绘制了能量路径。我们提供了潮汐期间能量级联过渡性的可靠证据。潮汐涡旋的周期性产生和破坏在一个潮汐周期内从逆能量级联到正能量级联的转变中起着相关的作用。按期间平均的能源预算显示多个级联并存。小尺度下是直接能量级联，而中、大尺度上则是分裂能级联，注入能量一部分流向小尺度，一部分流向较大流动尺度。
Tidal currents are predominant in coastal areas, causing the generation of vortices at different scales. We reproduce the main process of vortex shedding generated in tidal systems with inlets and channels using a laboratory large‐scale model. A filter‐space technique is implemented to analyze nonlinear energy/enstrophy transfer rates and map out the energy pathways through the flow scales of the measured velocity fields. We provide sound evidence of the transitional character of the energy cascades during a tidal period. The periodic generation and destruction of tidal vortices plays a relevant role in the transition from an inverse to a direct energy cascade within a tidal period. The period‐averaged energy budget shows the coexistence of multiple cascades. Small scales follow a direct energy cascade, whereas a split‐energy cascade is found at intermediate and large scales, where part of the injected energy goes to small scales and part to a larger flow scale.
潮湿对流驱动木星高纬度地区的高级能量转移
影响因子：
19.6
作者：
Siegelman, Lia;Klein, Patrice;Ingersoll, Andrew P.;Ewald, Shawn P.;Young, William R.;Bracco, Annalisa;Mura, Alessandro;Adriani, Alberto;Grassi, Davide;Plainaki, Christina
通讯作者：
Plainaki, Christina
影响因子：
2.2
作者：
Carolanne V. M. Vouriot;A. Angeloudis;S. Kramer;M. Piggott
通讯作者：
Carolanne V. M. Vouriot;A. Angeloudis;S. Kramer;M. Piggott