基于面元法的船舶螺旋桨附连水质量与阻尼计算方法研究  

A computational method for evaluation of added mass and damping of marine propellers based on the panel method

作　　者：邹冬林[1,2] 张建波[1,2] 塔娜[1,2] 饶柱石[1,2,3] ZOU Dong-lin;ZHANG Jian-bo;TA Na;RAO Zhu-shi(Insitute of Vibration,Shock and Noise,Shanghai Jiao Tong University,Shanghai 200240,China;State Key Laboratory of Mechanical System and Vibration,Shanghai Jiao Tong University,Shanghai 200240,China;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 200240,China)

机构地区：[1]上海交通大学振动冲击噪声研究所,上海200240 [2]上海交通大学机械系统与振动国家重点实验室,上海200240 [3]高新船舶与深海开发装备协同创新中心,上海200240

出　　处：《船舶力学》2019年第1期9-19,共11页Journal of Ship Mechanics

基　　金：国家自然科学基金青年基金(11802175);中国博士后科学基金资助(2018M632107)

摘　　要：在船舶轴系振动或桨轴流固耦合分析中,螺旋桨在流场中所引起的附连水质量与阻尼是很重要的参数。但实际计算中螺旋桨附连水质量常常用螺旋桨自身质量乘以一个经验系数得到,而附加阻尼往往被忽略。针对这些不足,文章利用螺旋桨水动力分析中常使用的面元法,构建了螺旋桨随轴系在水中振动时的附加质量与阻尼数值计算方法。目前求解附加质量的经典方法是基于运动物体引起流体动能变化来求解,但该方法不能求解附加阻尼。文中证明了所提出的方法与经典方法是完全等价的,同时利用该方法还可以求解附加阻尼。最后以球体、椭球体及螺旋桨为对象给出几个算例,并与解析解或其它文献计算结果比较,误差均在合理范围内,表明文中提出的方法的有效性。The added mass and damping of propellers caused by the fluid are important parameters in the vibration analysis or the fluid-structure interaction analysis of the marine propulsion shafting.However,in the engineering analysis,the added mass is usually calculated through multiplying the propeller’s weight by an empirical coefficient and the added damping is ignored.This is not accurate.So this paper presents a new method to calculate the added mass and damping of the propeller when it vibrates with the shaft.This new method bases on the panel method which is the common method in propeller hydrodynamic analysis.The current classical method for solving the added mass is by calculating the fluid kinetic energy and this method can not solve the added damping.It is proved that the proposed method is completely equivalent to the classical method,and can solve the added damping.Finally,the sphere,the ellipsoid and the propeller’s added mass and damping are solved with this new method.Compared with analytical or other simulative re sults,the errors are all in a reasonable range,indicating the effectiveness of the proposed method.

关 键 词：附加质量 附加阻尼 螺旋桨 流固耦合 面元法 

分 类 号：U664.21[交通运输工程—船舶及航道工程] O351.3[交通运输工程—船舶与海洋工程]