Macroscopic Modelling of Turbulent Flows
Macroscopic Modelling of Turbulent Flows
复制标题
湍流的宏观建模
DOI：
10.1007/3-540-15644-5
复制
发表时间：
1985
期刊：
影响因子：
--
通讯作者：
O. Pironneau
中科院分区：
文献类型：
--
作者：
U. Frisch;J. Keller;G. Papanicolaou;O. Pironneau
提出了一种新的均匀湍流亚网格模型。该模型被用于大涡模拟与E.D.Q.N.M.耦合的方法中。预测小尺度的统计特性。该模型是随机的，以便允许对E.D.Q.N.M.提供的信息进行“去平均化”。结束它是基于两点闭合的随机振幅方程。它允许能量从小尺度回流，将随机性引入L.E.S.，并且很好地适应非各向同性场。这里介绍了一些结果。
A new subgrid model for homogeneous turbulence is proposed. The model is used in a method of Large Eddy Simulation coupled with an E.D.Q.N.M. prediction of the statistical properties of the small scales. The model is stochastic in order to allow a “desaveraging” of the informations provided by the E.D.Q.N.M. closure. It is basedon stochastic amplitude equations for two-point closures. It allows backflow of energy from the small scales, introduces stochasticity into L.E.S., and is well adapted to non isotropic fields. A few results are presented here.