用大涡模拟检验湍流模型

The examination of Turbulence Modeling with LES Database

用大涡模拟方法对直方管内充分发展湍流运动的数值模拟，所建立的数据库可以用来检验湍流模型，本文中数据库被用来检验Ｄｅｍｕｒｅｎ和Ｒｏｄｉ文中所讨论的代数模型，并进行了讨论。

In this paper the database obtained from LES is used to examine the algebraic turbulence model in Demuren and Rodi's work.The results show that the prediction of normal Reynolds stresses and turbulence energy by means of means of turbuence modeling is better than that of shear Reynolds stresses.The comparison shows the LES method can be used to examine turbulence modelling.