Lattice Boltzmann simulations of high-order statistics in isotropic turbulent flows
Lattice Boltzmann simulations of high-order statistics in isotropic turbulent flows
复制标题
各向同性湍流高阶统计量的格子玻尔兹曼模拟
DOI:
10.1007/s10483-018-2254-9
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发表时间:
2017
影响因子:
4.4
通讯作者:
He Guowei
中科院分区:
文献类型:
--
作者:
Jin Guodong;Wang Shizhao;Wang Yun;He Guowei
The lattice Boltzmann method (LBM) is coupled with the multiple-relaxation-time (MRT) collision model and the three-dimensional 19-discrete-velocity (D3Q19) model to resolve intermittent behaviors on small scales in isotropic turbulent flows. The high-order scaling exponents of the velocity structure functions, the probability distribution functions of Lagrangian accelerations, and the local energy dissipation rates are investigated. The self-similarity of the space-time velocity structure functions is explored using the extended self-similarity (ESS) method, which was originally developed for velocity spatial structure functions. The scaling exponents of spatial structure functions at up to ten orders are consistent with the experimental measurements and theoretical results, implying that the LBM can accurately resolve the intermittent behaviors. This validation provides a solid basis for using the LBM to study more complex processes that are sensitive to small scales in turbulent flows, such as the relative dispersion of pollutants and mesoscale structures of preferential concentration of heavy particles suspended in turbulent flows.
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影响因子:
8.6
作者:
SHE, ZS;LEVEQUE, E
通讯作者:
LEVEQUE, E
影响因子:
3.5
作者:
Limin Wang;Guofeng Zhou;Xiaowei Wang;Q. Xiong;W. Ge
通讯作者:
Limin Wang;Guofeng Zhou;Xiaowei Wang;Q. Xiong;W. Ge
影响因子:
3.7
作者:
A. T. Cate;J. Derksen;L. Portela;H. V. D. Akker
通讯作者:
A. T. Cate;J. Derksen;L. Portela;H. V. D. Akker
影响因子:
1.6
作者:
Shiyi Chen;Z. Wang;X. Shan;G. Doolen
通讯作者:
Shiyi Chen;Z. Wang;X. Shan;G. Doolen
影响因子:
3.3
作者:
Hofmann, C;Aartsma, TJ;Köhler, J
通讯作者:
Köhler, J