Sufficient Conditions for Dual Cascade Flux Laws in the Stochastic 2d Navier–Stokes Equations

Sufficient Conditions for Dual Cascade Flux Laws in the Stochastic 2d Navier–Stokes Equations
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随机二维纳维斯托克斯方程中双级联通量定律的充分条件

DOI:
10.1007/s00205-020-01503-9
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发表时间:
2020
影响因子:
2.5
通讯作者:
Weber, Franziska
Weber, Franziska
中科院分区:
数学1区
文献类型:
--
作者:
Bedrossian, Jacob;Coti Zelati, Michele;Punshon-Smith, Sam;Weber, Franziska

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对于统计平稳、强迫耗散的二维Navier-Stokes方程,我们提供了三阶通用定律在数学上严格证明的充分条件,这些定律捕获了大尺度的能量通量和小尺度的熵通量。这些定律可以看作是三维湍流中4/5定律的二维湍流类比,在二维湍流的双级联中,通过两个惯性范围分别预测了能量和熵的恒定通量。还得到了两个级联中只有一个的条件,以及紧致性准则,表明所提供的充分条件离必要条件不远。这项工作的具体目标是提供二维湍流“第0定律”的最弱特征,以便做出与实验证据一致的数学上严格的预测。
We provide sufficient conditions for mathematically rigorous proofs of the third order universal laws capturing the energy flux to large scales and enstrophy flux to small scales for statistically stationary, forced-dissipated 2d Navier–Stokes equations in the large-box limit. These laws should be regarded as 2d turbulence analogues of the 4/5 law in 3d turbulence, predicting a constant flux of energy and enstrophy (respectively) through the two inertial ranges in the dual cascade of 2d turbulence. Conditions implying only one of the two cascades are also obtained, as well as compactness criteria which show that the provided sufficient conditions are not far from being necessary. The specific goal of the work is to provide the weakest characterizations of the “0-th laws” of 2d turbulence in order to make mathematically rigorous predictions consistent with experimental evidence.
DOI: 10.1063/1.1379956
发表时间: 2001-06
影响因子: 1.6
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