提出了一种用边界层理论对轴对称弯曲流道内部流动进行分析的方法,即主流区用流线曲率法计算,边界层利用Partanker-Spolding方法,并采用了k-ε,紊流模式。在边界层方程组及k-ε方程中均考虑了轴对称情形下曲率的影响,并在紊流模式中考虑了曲壁对紊流结构的影响。此外还以“分离点的奇异性”预测了边界层的分离,给出了轴对称曲壁发生分离时型参数的大小。经实验与计算比较,结果令人满意。 A boundary layer theory is proposed to analyze the flow inside an axisymmetric curved runner. The mainstream area is calculated by the streamline curvature method. Partanker-Spolding method is used in the boundary layer. The k-ε turbulence model is adopted. In the boundary layer equations and the k-ε equations, the influence of the curvature under axial symmetry is considered, and the influence of the curved wall on the turbulence structure is taken into account in the turbulence model. In addition, the separation of the boundary layer is predicted by the singularity of the separation point, and the size of the parameters of the axisymmetric curved wall is obtained. The experimental results are satisfactory.