In order to predict hydrodynamic characteristics a computational system is developed including determination of the pressure distribution on a wing section by use of the conformal mapping method and panel method respectively and of the flow in boundary layer according to the thin shear layer approximation ( tsl ) for navier - stokes equation approach . the wing sections of naca4412 and naca0012 are applied to test the computational system . the numerical inspection shows that the panel method with better precision and the momentum and the displacement thickness of boundary layer can be used to complete this calculation 本文分别用守屋的保角变换法和基于源汇涡分布的面元法，建立了计算桨叶表面压力分布的数学模型；应用纳维-斯托克方程的薄层近似理论模式和有限差分数值方法，建立了计算机翼表面边界层内部流动的数学模型；应用桨叶表面边界层内部粘性流动和外部势流流动在边界上的匹配算法，建立了桨叶表面二相流流动的计算方法和相应的计算机程序。
