Comparative Study of the Large Eddy Simulations with the Lattice Boltzmann Method Using the Wall-Adapting Local Eddy-Viscosity and Vreman Subgrid Scale Models
Comparative Study of the Large Eddy Simulations with the Lattice Boltzmann Method Using the Wall-Adapting Local Eddy-Viscosity and Vreman Subgrid Scale Models
复制标题
使用壁自适应局部涡粘性和 Vreman 次网格尺度模型的格子玻尔兹曼方法进行大涡模拟的比较研究
DOI:
10.1088/0256-307x/29/10/104706
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发表时间:
2012-10
影响因子:
3.5
通讯作者:
Premnath, Kannan N.
中科院分区:
文献类型:
--
作者:
Liu Ming;Chen Xiao-Peng;Premnath, Kannan N.
The wall-adapting local eddy-viscosity (WALE) and Vreman subgrid scale models for large eddy simulations are compared within the framework of a generalised lattice Boltzmann method. Fully developed turbulent flows near a flat wall are simulated with the two models for the shear (or friction) Reynolds number of 183.6. Compared to the direct numerical simulation (DNS), damped eddy viscosity in the vicinity of the wall and a correct velocity profile in the transitional region are achieved by both the models without dynamic procedures. The turbulent statistics, including, e.g., root-mean-square velocity fluctuations, also agree well with the DNS results. The comparison also shows that the WALE model predicts excellent damped eddy viscosity near the wall.
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