Energy flux and high-order statistics of hydrodynamic turbulence
Energy flux and high-order statistics of hydrodynamic turbulence
复制标题
流体动力湍流的能量通量和高阶统计
DOI:
10.1017/jfm.2023.662
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发表时间:
2023
影响因子:
3.7
通讯作者:
L'vov, Victor S.
中科院分区:
文献类型:
--
作者:
Lvov, Yuri V.;L'vov, Victor S.
We use the Dyson–Wyld diagrammatic technique to analyse the infinite series for the correlation functions of the velocity in hydrodynamic turbulence. We demonstrate the fundamental role played by the triple correlator of the velocity in determining the entire statistics of the hydrodynamic turbulence. All higher-order correlation functions are expressed through the triple correlator. This is shown through the suggested triangular re-summation of the infinite diagrammatic series for multi-point correlation functions. The triangular re-summation is the next logical step after the Dyson–Wyld line re-summation for the Green's function and the double correlator. In particular, it allows us to explain why the inverse cascade of the two-dimensional hydrodynamic turbulence is close to Gaussian. Since the triple correlator dictates the flux of energy is one of the main characteristics of hydrodynamic turbulence.
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DOI:
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发表时间:
1999
期刊:
影响因子:
--
作者:
V. L’vov;Y. L’vov;A. Pomyalov
通讯作者:
A. Pomyalov
DOI:
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发表时间:
1995
期刊:
影响因子:
--
作者:
V. L’vov;I. Procaccia
通讯作者:
I. Procaccia
DOI:
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1961
期刊:
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--
作者:
H. Wyldjr
通讯作者:
H. Wyldjr
DOI:
--
发表时间:
1975
期刊:
影响因子:
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作者:
V. Zakharov;V. L’vov
通讯作者:
V. L’vov