摘要
为了探讨转动导管螺旋桨的水动力性能,本文采用基于RANS(Reynolds-Averaged Navier-Stokes)方程的CFD(Computational Fluid Dynamics)方法对不同导管剖面型式、不同导管转动角度下导管桨的敞水性能进行数值计算。首先,通过与实验结果的对比分析对所采用的数值计算方法进行了验证;然后,基于数值计算结果讨论了导管剖面型式变化、导管后添加舵及导管转动的情况下导管桨敞水性能的变化。结果表明,扭矩系数受导管剖面型式变化的影响比推力系数大,导管桨的推力系数基本不变,扭矩系数变小,敞水效率升高;导管后舵的存在使导管桨推力系数和扭矩系数都增大,但敞水效率几乎不变;导管转动后,推力系数在转动角度达一定值前略微增加,之后大幅下降,而扭矩系数一直大幅增大,敞水效率明显下降。
In order to investigate the hydrodynamic performance of rotating ducted propellers,this paper uses CFD(Computational Fluid Dynamics)method based on RANS(Reynolds-Averaged Navier-Stokes)equation to numerically cal-culate the open water performance of ducted propellers under different duct profile types and different duct rotation angles.Firstly,the numerical calculation method adopted was verified by comparative analysis with experimental results.Then,based on the numerical calculation results,the changes in open water performance of ducted propellers under the conditions of varying duct profile types,adding rudders behind the ducts,and rotating the ducts were discussed.The results show that the torque coefficient is more affected by changes in duct profile type than the thrust coefficient,and the thrust coefficient of ducted propellers remains basically unchanged,while the torque coefficient decreases and the open water efficiency in-creases.The presence of rudders behind the ducts increases both the thrust coefficient and torque coefficient of ducted pro-pellers,but the open water efficiency remains almost unchanged.After rotating the ducts,the thrust coefficient increases slightly before reaching a certain value of rotation angle,and then decreases sharply,while the torque coefficient increases significantly,and the open water efficiency decreases significantly.
作者
顾建慧
周利兰
李涛
李维
GU Jianhui;ZHOU Lilan;LI Tao;LI Wei(Key Laboratory of High Performance Ship Technology,Ministry of Education,Wuhan University of Technology,Wuhan 430063,China;School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China;China Classification Society W uhan Branch,Wuhan 430022,China;China Ship Development and Design Center,Wuhan 430063,China)
出处
《舰船科学技术》
北大核心
2025年第4期1-6,共6页
Ship Science and Technology
基金
国家自然科学基金资助项目(52271326)。
关键词
转动导管
导管螺旋桨
敞水性能
数值计算
steering nozzle
duct propeller
open water performance
numerical calculation
作者简介
周利兰(1985-),女,博士,副教授,研究方向为船舶水动力性能。
