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
发表期刊EPL
卷号94期号:3页码:34003
文章类型期刊论文
摘要

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
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10291
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Gu, ZL (Gu, Zhaolin)[1,2]
作者单位1.Xi’an Jiaotong University - Xi’an 710049, China;
2.SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences - Xi’an, China
推荐引用方式
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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