Scale-similar structures of homogeneous isotropic non-mirror-symmetric turbulence based on the Lagrangian closure theory
Scale-similar structures of homogeneous isotropic non-mirror-symmetric turbulence based on the Lagrangian closure theory
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基于拉格朗日闭合理论的均匀各向同性非镜对称湍流的尺度相似结构
DOI:
10.1017/jfm.2021.708
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发表时间:
2021
影响因子:
3.7
通讯作者:
Inagaki Kazuhiro
中科院分区:
文献类型:
--
作者:
Inagaki Kazuhiro
We investigate the effect of helicity on the scale-similar structures of homogeneous isotropic and non-mirror-symmetric turbulence based on the Lagrangian renormalised approximation (LRA), which is a self-consistent closure theory proposed by Kaneda (J. Fluid Mech., vol. 107, 1981, pp. 131–145). In this study, we focus on the time scale representing the scale-similar range. For the LRA, the Lagrangian two-time velocity correlation and response function determine the representative time scale. The LRA predicts that both the Lagrangian two-time velocity correlation and response function equation do not explicitly depend on helicity. We assume the extended scale-similar spectra and time scale by considering the helicity dissipation rate. Considering the small-scale structures, the requirements for the energy and helicity fluxes and response function equation to be scale similar, yield the conventional inertial-range power laws and provide the energy and helicity spectra denotes the helicity dissipation rate. This condition makes the energy cascade process in the scale-similar range completely independent of helicity. We also investigate the localness of the interscale interaction in the energy and helicity cascades for the LRA. We demonstrate that the helicity cascade is slightly non-local in scales compared with the energy cascade. This study provides a foundation on the modelling of non-mirror-symmetric turbulent flows.
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影响因子:
4.6
作者:
Y. Kaneda
通讯作者:
Y. Kaneda
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
A. Yoshizawa
通讯作者:
A. Yoshizawa
影响因子:
4.6
作者:
Y. Kaneda
通讯作者:
Y. Kaneda
影响因子:
3.7
作者:
S. Kurien;Mark A. Taylor;T. Matsumoto
通讯作者:
T. Matsumoto
DOI:
10.1103/physreve.92.051002
发表时间:
2015-06
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
G. Sahoo;F. Bonaccorso;Luca Biferale
通讯作者:
G. Sahoo;F. Bonaccorso;Luca Biferale