Scale-adaptive subgrid-scale modelling for large-eddy simulation of turbulent flows
Scale-adaptive subgrid-scale modelling for large-eddy simulation of turbulent flows
复制标题
用于湍流大涡模拟的尺度自适应亚网格尺度建模
DOI:
10.1063/1.4977089
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发表时间:
2017-03
影响因子:
4.6
通讯作者:
Li Xinliang
中科院分区:
文献类型:
--
作者:
Yu Changping;Xiao Zuoli;Li Xinliang
The proportionality between the subgrid-scale (SGS) drain rate of kinetic energy and the viscous dissipation rate of the resolved motions is studied a priori by filtering a given fully resolved field and evaluating a generic form of the hypothesized energy spectrum. The ratio of the SGS drain to the resolved dissipation, on which a balance condition for the SGS dissipation across an arbitrary grid scale is founded, is shown to be independent of the turbulence Reynolds number, and can be described by a function in terms of the averaged mesh Reynolds number. Such a balance condition can serve as a physical constraint in the SGS modeling to account for the scale effects of the model coefficient(s). Scale-adaptive dynamic Smagorinsky-Lilly model and mixed nonlinear model are formulated for large-eddy simulation of transitional and/or turbulent flows in such a way that the constraint is satisfied. The newly proposed scale-adaptive dynamic SGS models are validated in simulations of homogeneous isotropic turbule...
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影响因子:
4.6
作者:
Yipeng Shi;Zuoli Xiao;Shiyi Chen
通讯作者:
Yipeng Shi;Zuoli Xiao;Shiyi Chen
DOI:
10.5065/d67h1ggq
发表时间:
1966
期刊:
--
影响因子:
--
作者:
K. Lilly
通讯作者:
K. Lilly
影响因子:
4.6
作者:
Yu Changping;Xiao Zuoli;Li Xinliang
通讯作者:
Li Xinliang
影响因子:
2.4
作者:
Yu Changping;Xiao Zuoli;Shi Yipeng;Chen Shiyi
通讯作者:
Chen Shiyi
影响因子:
1.9
作者:
A. Rasam;S. Wallin;G. Brethouwer;A. Johansson
通讯作者:
A. Rasam;S. Wallin;G. Brethouwer;A. Johansson