子格(SGS)模型在内流湍流中的大涡模拟

Large Eddy Simulation with SGS of Turbulence in Inner Flow

本文将子格(SGS)模型应用于大涡模拟,对直方管,弯方管和弯曲槽道内充分发展湍流,进行了数值模拟,并将所得的结果与实验数据作比较。计算表明,应用于子格(SGS)模型的大涡模拟可以用来模拟比较复杂的内流,研究湍流运动的结构,检验湍流模型。

In the present paper, the Subgrid Stress (SGS) model was used in Large Eddy Simulation (LES) to simulate numerically the fully developed turbulence in straight and curved square ducts as well as curved channel. The obtained results were compared with experimental data. The comparison shows that the LES with SGS can be used to simulate complex inner turbulent flows, to analyse the flow structure in turbulence and to examine the turbulence model.