应用RNG k-ε湍流模式数值模拟90°弯曲槽道内的湍流流动

Numerical Simulation of Turbulent Flow in Rectangular Curved Duct Using RNG K-εTurbulence Model

本文将Yakhot与Orszag提出的RNGk-ε湍流模式与壁面律相结合,应用于90°弯曲槽道湍流流动的数值模拟.计算在任意非正交曲线坐标系下进行.并采用非交错网格有限体积方法求解三维不可压N-S方程.文中给出了详细的计算结果,并与实验结果进行了比较,结果表明,RNG k-ε湍流模式能够有效地模拟有曲率影响的湍流流动.

In this paper the RNG k-εturbulence model proposed by Yakhot and Orszag is applied with wall function .to simulate the turbulent flow in a rectangular curved duct. 3-D incompressible N-S equations are solved in a non-orthogonal curvilinear coordinate system by the finite volume method with a nonstaggered grid. The re-sults are compared with experimental data. It is shown that the RNG k-εturbulence model can be used to suc-cessfully simulate turbulent flows with curvature effect.