A Second-Order Dynamic Subgrid-Scale Stress Model

Gong Hongrui; Chen Shiyi; He Guowei; Cao Nianzhen

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Article Navigation > Applied Mathematics and Mechanics > 2000 > 21(2): 147-153

Gong Hongrui, Chen Shiyi, He Guowei, Cao Nianzhen. A Second-Order Dynamic Subgrid-Scale Stress Model[J]. Applied Mathematics and Mechanics, 2000, 21(2): 147-153.

Citation:

Gong Hongrui, Chen Shiyi, He Guowei, Cao Nianzhen. A Second-Order Dynamic Subgrid-Scale Stress Model[J]. Applied Mathematics and Mechanics, 2000, 21(2): 147-153.

Citation:

Gong Hongrui, Chen Shiyi, He Guowei, Cao Nianzhen. A Second-Order Dynamic Subgrid-Scale Stress Model[J]. Applied Mathematics and Mechanics, 2000, 21(2): 147-153.

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A Second-Order Dynamic Subgrid-Scale Stress Model

1.
Center for Adaptive Systems Application, Inc, 1911, Central, Los Alamos, NM 87544, USA;
2.
Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, NM87545, USA;
3.
Loboratory for Nonlinear Mechanics, Institute of Mechanics, Academia Sinica, Beijing 100080, P. R. China

Received Date: 1998-08-10
Publish Date: 2000-02-15

Abstract

Abstract

A second-order dynamic model based on the general relation between the subgrid-scale stress and the velocity gradient tensors was proposed.A priori test of the second-order model was made using moderate resolution direct numerical simulation date at high Reynolds number(Taylor microscale Reynolds number R_λ=102~216)for homogeneous,isotropic forced flow,decaying flow,and homogeneous rotating flow.Numerical testing shows that the second-order dynamic model significantly improves the correlation coefficient when compared to the first-oder dynamic models.
- turbulent flow,
- dynamic model,
- subgrid-scale stress model,
- Smagorinsky model

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References(10)

References

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