针对船舶螺旋桨在航行过程中，受到周围水域复杂伴流的影响，使螺旋桨受力不均，导致螺旋桨的结构应力变形增大，进而发生螺旋桨断裂甚至失效的现象，以某散货船为例，用有限元分析方法对其进行双向流固耦合仿真。利用瞬态仿真模拟螺旋桨周围水域的流线变化，分析螺旋桨的应力与变形、振动以及模态变化，并且通过控制变量法，将有无伴流存在的分析结果进行对比，研究伴流对螺旋桨受力变形的影响程度。研究结果表明，不均匀的伴流会极大地改变螺旋桨周围水域的流线运动状态，使得其受力变形更加不均匀，增大其振动变形状态。
Due to the influence of complicated wake in the surrounding water area, the stress of the propeller is uneven, which leads to the increase of structural stress and deformation of the propeller, and then leads to the fracture and even failure of the propeller. In this paper, a bulk carrier is taken as an example to carry out two-way fluid structure coupling simulation with finite element analysis method. The streamline changes of the water area around the propeller are simulated by transient simulation, and the stress and deformation, vibration and modal changes of the propeller are analyzed. Through the control variable method, the influence of wake on propeller deformation is studied by comparing the analysis results of wake and non wake. The results show that the non-uniform wake will greatly change the streamline motion state of the water area around the propeller and make its stress deformation more uneven, it will increase its vibration deformation state.
2022,44(6): 54-59 收稿日期：2021-07-02
DOI：10.3404/j.issn.1672-7649.2022.06.011
分类号：U664.33
基金项目：船舶动力工程技术交通行业重点实验室开放基金资助项目（X20D004）；武汉工程大学校基金资助项目（18QD38）
作者简介：刘世伟(1982 - )，男，副教授，研究方向为船舶动力工程技术
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