摘要
本文针对轮缘推进器提出一种新型后置节能定子,并深入分析了有无新型后置定子的轮缘推进器在直流及斜流工况下的非定常流体动力特性。基于STAR-CCM+软件,采用(SST)k-ω湍流模型对加装新型后置定子前后的轮缘推进器流场进行模拟,重点研究后置定子对推进器轴向和侧向载荷的影响规律。通过快速傅里叶变换进行频域分析,进一步探讨了新型后置定子对推进器转子推力系数频域特性的影响。结果表明,引入后置定子显著增强推进器在斜尾流中的恢复能力;通过有无后置定子的轮缘推进器尾流对比分析,发现后置定子的存在使得推进器尾流的速度流场更加均匀,从而提升了推进器在斜流下的推进性能。
A new type of energy-saving rear stator is proposed for rim-driven thruster(RDT)and the unsteady hydrodynamic characteristics of rim-driven thrusters with and without rear stator are analyzed in depth for both direct and oblique flow conditions in this paper.Based on the STAR-CCM+software,a(SST)k-ωturbulence model is used to simulate the flow field of the rim-driven thruster before and after the addition of the new rear stator,and the impact of rear stator on the performance of the propeller is primarily investigated,with a special focus on its influence on axial and lateral load patterns.Utilizing Fast Fourier Transform(FFT)frequency domain analysis,the influence of proposed stators on the frequency domain characteristics of the rotor thrust coefficient is further explored.The findings demonstrate that the introduction of new rear stator significantly enhances the propeller's capability to recover in oblique flow conditions.Furthermore,a comparative analysis of the wake flow behind propellers with and without new rear stator reveals that the presence of rear stator leads to a more uniform velocity field in the propeller wake,thereby improving the propulsive performance under oblique flow.
作者
李冬琴
杨恒旭
卞向前
黄堂苡
LI Dongqin;YANG Hengxu;BIAN Xiangqian;HUANG Tangyi(School of Naval Architecture and Intelligent Manufacturing,Jiangsu Maritime Institute,Nanjing 211199,China;School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,China)
出处
《舰船科学技术》
北大核心
2026年第1期107-113,共7页
Ship Science and Technology
基金
国家自然科学基金资助项目(52101315)
江苏海事职业技术学院科研启动基金项目(2025BSKY01,2024BSKY23)。
