A dynamic multilevel model for the simulation of the small structures in homogeneous isotropic turbulence

被引：12

作者：

Dubois T. ^{[1
]}

Jauberteau F. ^{[1
]}

机构：

[1] Lab. de Math. Appliquées, Université Blaise Pascal, CNRS (UMR 6620)

来源：

Journal of Scientific Computing | 1998年 / 13卷 / 3期

关键词：

Direct numerical simulation; Filtering; Multilevel methods; Small scales; Turbulence;

D O I：

10.1023/A:1023223217210

中图分类号：

学科分类号：

摘要：

A multilevel method for simulation of small structures applied to homogeneous isotropic turbulence, is described. The analysis of the nonlinear interaction term in the large scale equation shows that they locally have a very small contribution to the whole dynamic of the flow. Specific treatments for the nonlinear interaction terms are achieved by a space and time adaptive procedure and the cut-off value which defines the scale separation varies as time evolves. The multilevel algorithm is stable and the corresponding simulated flows reach a statistically steady state very close to the direct numerical simulations (DNS).

引用

页码：323 / 367

页数：44

共 31 条

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