Large eddy simulation of magnetohydrodynamic turbulent channel flows under a uniform magnetic field
Large eddy simulation of magnetohydrodynamic turbulent channel flows under a uniform magnetic field
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DOI：
10.1063/1.858124
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发表时间：
1991
影响因子：
4.6
通讯作者：
Y. Shimomura
中科院分区：
文献类型：
--
作者：
Y. Shimomura
采用大涡模拟技术研究了均匀磁场作用下磁流体动力学湍流槽道流动。均匀磁场的影响以局部阻尼因子的形式纳入亚网格尺度模型。与实验结果的比较表明，该模型在湍流和层流状态下都比通常的Smagorinsky模型更好。该模型预测了当前流动的详细结构，对于这一点，系综平均型的全球湍流模型无能为力。
Magnetohydrodynamic turbulent channel flows under a uniform magnetic field are studied by using a large eddy simulation technique. The effect of a uniform magnetic field is incorporated into the subgrid‐scale model in the form of a local damping factor. Compared with the experiment, this model is shown to work better than the usual Smagorinsky model in both turbulent and laminar states. This model predicts the detailed structures of the present flows, for which, one‐point global turbulence models of ensemble mean type are helpless.