IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
The nature of a universal subgrid eddy viscosity model in a turbulent channel flow
Gu, ZL (Gu, Zhaolin)[1,2]; Jiao, JY (Jiao, Jianying)[1]; Zhang, YW (Zhang, Yunwei)[1]; Su, JW (Su, Junwei)[1]
2011-05-30
Source PublicationEPL
Volume94Issue:3Pages:34003
Subtype期刊论文
Abstract

Large-eddy simulation, which is a widely used method of computational fluid dynamics, can accurately simulate wall-bounded turbulent flows due to near-wall treatment. Through analyzing the similarities of the eddy viscosity formulations for large-eddy simulation and Reynolds-averaged Navier-Stokes, we propose a universal subgrid eddy viscosity model (USM) for large-eddy simulation of turbulent flows. The subgrid eddy viscosity in the model is related not only to the norm of the strain rate tensor of the smallest resolved scales but also to the mixing length associated with the subgrid scale, while the subgrid tensor is associated with the strain rate tensor of large scales like in the classical Smagorinsky model. With the friction-velocity-based Reynolds number, 395, the channel flow simulations by USM show that this subgrid eddy viscosity model can physically illustrate the eddy viscosity in the near-wall region and directly simulate the wall-bounded turbulent flow, compared with the classical Smagorinsky model, the dynamic Smagorinsky model, and Moser et al.'s direct numerical simulations (DNS).

DOI10.1209/0295-5075/94/34003
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10291
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorGu, ZL (Gu, Zhaolin)[1,2]
Affiliation1.Xi’an Jiaotong University - Xi’an 710049, China;
2.SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences - Xi’an, China
Recommended Citation
GB/T 7714
Gu, ZL ,Jiao, JY ,Zhang, YW ,et al. The nature of a universal subgrid eddy viscosity model in a turbulent channel flow[J]. EPL,2011,94(3):34003.
APA Gu, ZL ,Jiao, JY ,Zhang, YW ,&Su, JW .(2011).The nature of a universal subgrid eddy viscosity model in a turbulent channel flow.EPL,94(3),34003.
MLA Gu, ZL ,et al."The nature of a universal subgrid eddy viscosity model in a turbulent channel flow".EPL 94.3(2011):34003.
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