Deconvolutional artificial neural network models for large eddy simulation of turbulence
Deconvolutional artificial neural network models for large eddy simulation of turbulence
复制标题
用于湍流大涡模拟的反卷积人工神经网络模型
DOI:
10.1063/5.0027146
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发表时间:
2020-07
影响因子:
4.6
通讯作者:
Wang Jianchun
中科院分区:
文献类型:
--
作者:
Yuan Zelong;Xie Chenyue;Wang Jianchun
Deconvolutional artificial neural network (DANN) models are developed for subgrid-scale (SGS) stress in large eddy simulation (LES) of turbulence. The filtered velocities at different spatial points are used as input features of the DANN models to reconstruct the unfiltered velocity. The grid width of the DANN models is chosen to be smaller than the filter width, in order to accurately model the effects of SGS dynamics. The DANN models can predict the SGS stress more accurately than the conventional approximate deconvolution method (ADM) and velocity gradient model (VGM) in a prior study: the correlation coefficients can be made larger than 99\% and the relative errors can be made less than 15\% for the DANN model. In an a posteriori study, a comprehensive comparison of the DANN model, the implicit large eddy simulation (ILES), the dynamic Smagorinsky model (DSM), and the dynamic mixed model (DMM) shows that: the DANN model is superior to the ILES, DSM, and DMM models in the prediction of the velocity spectrum, various statistics of velocity and the instantaneous coherent structures without increasing the considerable computational cost. Besides, the trained DANN models without any fine-tuning can predict the velocity statistics well for different filter widths. These results indicate that the DANN framework with consideration of SGS spatial features is a promising approach to develop advanced SGS models in the LES of turbulence.
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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
影响因子:
4.1
作者:
E. Garnier;M. Mossi;P. Sagaut;P. Comte;M. Deville
通讯作者:
E. Garnier;M. Mossi;P. Sagaut;P. Comte;M. Deville
影响因子:
4.6
作者:
Yu Changping;Xiao Zuoli;Li Xinliang
通讯作者:
Li Xinliang
DOI:
10.1016/j.jcp.2005.08.017
发表时间:
2005-12
期刊:
J. Comput. Phys.
影响因子:
--
作者:
S. Hickel;N. Adams;J. Domaradzki
通讯作者:
S. Hickel;N. Adams;J. Domaradzki
影响因子:
4.6
作者:
Linyang Zhu;Weiwei Zhang;Jiaqing Kou;Yilang Liu
通讯作者:
Yilang Liu