This paper numerically presented the effect of the cross-flow wake on the hydrodynamic performance of the ship propeller. The propeller is a typical high skewed propeller (HSP) of the training ship ‘Seiun-Maru’, whose experimental data have been frequently used by many researchers. The viscous flow is solved by an incompressible Reynolds Averaged Navier–Stokes (RANS) method using Ansys-CFX solver. The shear stress transport (SST) k–ω turbulence model is employed for the simulation of the propeller in a fully turbulent flow. The thrust and torque coefficients at 10 presented advance coefficients (between 0.1 and 1) showed good agreement comparing with experimental data. The numerical results are increased in the wake flows. The unsteady oscillating load of thrust and torque is presented and discussed for one blade and whole blades during one cycle at different cross-flow wakes and at advance coefficient (J = 0.85). Based on the numerical results, when the cross-flow wake is increased by 20% and 50%, the thrust at J = 0.85 are increased about 2.03% and 4.71% respectively and the torque at J = 0.85 is increased about 1.04% and 2.69%, respectively. Moreover, pressure distribution and streamlines are also presented and discussed.

数值模拟了横流尾流对船舶螺旋桨水动力性能的影响。该螺旋桨是训练舰“Seiun-Maru”的典型高偏斜螺旋桨（HSP），其实验数据已被许多研究人员频繁使用。粘性流通过使用 Ansys-CFX 求解器的不可压缩雷诺平均纳维-斯托克斯 (RANS) 方法求解。剪应力传递 (SST) k–ω湍流模型用于模拟完全湍流中的螺旋桨。推力系数和扭矩系数在 10 呈现提前系数（在 0.1 和 1 之间）与实验数据相比显示出良好的一致性。数值结果在尾流中增加。给出并讨论了在不同横流尾流和提前系数（J  = 0.85）下，一个叶片和整个叶片在一个周期内的推力和扭矩的非定常振荡载荷。根据数值结果，当横流尾流增加 20% 和 50% 时，J  = 0.85 处的推力分别增加约 2.03% 和 4.71%，J处的扭矩 = 0.85 分别增加了约 1.04% 和 2.69%。此外，还介绍和讨论了压力分布和流线。