转捩模型在静叶栅三维粘性流数值模拟中的应用研究

Study on the Application of Transition Model to the 3D Viscous FlowNumerical Simulation of Static Cascade

边界层转捩流动的特征参数明显不同于层流或湍流,转捩流动的这些特征直接影响着流体的动力、传热特性。而通过有效地控制转捩起点、转捩区长度就可以有效改善流动效率。作者将修正的转捩模型应用到实际流场计算中,对计算结果进行了比较,从中得到了一些有意义的分析结果。

The characteristic parameters of fluid during the transition in boundary layer are obviously different from that of the laminar flow or the turbulent flow. These characteristic parameters execute direct effects on the dynamic and thermal characteristics. The flow efficiency can be effectively improved by controlling the start point and the length of transition area. The author has applied the modified transition model into the practical flow field calculation, compared the calculation results and obtained some significant analysis results.