中文摘要：

采用基于RANS方程的雷诺应力模型（EARSM）对导管桨的敞水性能及周围流场进行了数值计算,计算网格采用全结构化网格,网格的划分考虑了导管与桨叶间隙的边界层的影响。在设计进速下,桨叶敞水性能的误差小于2%。对导管桨的周围流场进行了模拟,尤其对导管桨尾部涡系进行了系统研究,计算结果与试验结果吻合较好,说明本文提出的方法可以准确计算导管桨的螺距角,为导管桨的设计及水动力性能预报提供参考。

英文摘要：

The open water performance and the viscous flow around a marine ducted propeller were simulated by solving the RANS equations with the explicit algebraic Reynolds stress turbulence model（ EARSM）. In order to solve the problem of the tip clearance of the ducted propeller,a structured grid was generated for the current computational domain. Under the condition of the design advance ratio,the error of the open water performance of the duct was less than 2%. We simulated the viscous flow field around the ducted propeller. In particular,we systematically studied the trailing vortex of the propeller. Computational and experimental results were in good agreement,indicating that this method can be used to accurately compute the pitch of the ducted propeller and provide a reference for the design of such a propeller and for the prediction of the hydrodynamic performance.