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
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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.
Premnath, Kannan N.
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Liu Ming;Chen Xiao-Peng;Premnath, Kannan N.

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在推广的格子Boltzmann方法框架内,比较了适用于大涡模拟的壁面自适应局部涡粘性(WALE)和Vreman亚网格尺度模式。在剪切(或摩擦)雷诺数为183.6的情况下,用这两种模型模拟了平壁附近充分发展的湍流流动。与直接数值模拟相比,这两种模型均能在壁面附近得到阻尼涡粘性,在过渡区得到正确的速度分布,而不需要动力过程。湍流统计数据,包括均方根速度波动,也与dns的结果很好地吻合。比较还表明,Wale模型对壁面附近的阻尼涡粘度有很好的预测能力。
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.
DOI: 10.1016/j.jcp.2006.10.023
发表时间: 2006-11
期刊: J. Comput. Phys.
影响因子: --
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