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本文提出了一个在回流区壁面附近湍流二方程模式的改进方法,并湍流的涡量输运方程及流函数方结合衰减函数的差分格式计算了局部阻塞管道中程,所得到的湍流的时均速度分布与前人的数值结果相比更接近实验结果.
In this paper, an improved method of turbulence two-equation model near the wall of the recirculation zone is proposed. The turbulent vorticity transport equation and flow function are combined with the difference function of the decay function to calculate the local obstruction of the pipeline. The mean turbulence time The velocity distribution is closer to experimental results than previous numerical results.