基于数值方法对船舶无轴轮缘推进动态特性开展研究。首先，基于CFD方法获取无轴轮缘推进器敞水性能，基于切比雪夫多项式拟合获得了无轴轮缘推进器四象限性能曲线。然后，构建船-桨耦合动态仿真数学模型以及开发仿真程序。最后，通过算例对无轴推进船舶典型的起动和停机的动态特性仿真，与试验对比验证方法的有效性。与传统推进对比表明：无轴轮缘推进器超载力矩更低、响应更快。本文研究可为无轴轮缘推进器的设计提供指导，提升船舶采用无轴轮缘推进机动性能和可靠性。
Based on the numerical method, the dynamic characteristics of the ship's shaftless rim propulsion are studied. First, the open water performance of the shaftless Rim-driven Thruster is obtained based on the CFD method, and the four-quadrant performance curve of the shaftless Rim-driven Thruster is obtained based on the Chebyshev polynomial fitting. Then, construct the ship-propeller coupling dynamic simulation mathematical model and develop the simulation program. Finally, a simulation example is used to simulate the typical starting and stopping dynamic characteristics of a shaftless propulsion ship, and the validity of the method is verified by comparison with the experiment. Compared with traditional propulsion, it shows that the shaftless rim thruster has lower overload torque and faster response. The research in this paper can provide guidance for the design of shaftless Rim-driven Thruster and improve the maneuverability and reliability of ships using shaftless rim propulsion.
2021,43(6): 46-52 收稿日期：2021-04-07
DOI：10.3404/j.issn.1672-7649.2021.06.009
分类号：U664.41
作者简介：宋显成(1981-)，男，博士，主要研究方向为舰船动力与推进技术
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