摘要
针对船舶操纵性自航回转试验成本较高,且现有成熟仿真方法效率低、分析要素单一等问题,本文提出了一种船舶自航回转运动数值模拟方法,并利用商用计算流体力学软件Star-CCM+对三体船模在满舵角30°和半舵角15°所受推力情况下的自航回转运动进行了数值模拟,将该模拟结果与较为成熟的基于数学模型方程组的约束模仿真回转运动结果进行了对比分析,通过对三体船在满舵角和半舵角时的纵距、横距、旋回初径和回转直径等操纵性回转要素值进行分析可知,其差值均在7%以内,验证了文中所提方法的可靠性。且采用文中所提方法对目标船模进行模拟计算时,不仅能够获得船模在平面运动内的回转性能要素,同时还能得到船模横摇、纵摇、升沉等多自由度运动响应要素,本文亦对三体船在满舵角和半舵角下做自航回转运动时的横摇、纵摇、升沉等响应要素进行了分析,从定性分析的角度看,模拟所得的各运动响应要素结果与实际船舶在做回转运动时产生的现象相符;从定量的角度分析,模拟目标船模所得各运动响应要素结果较好,不会对船模回转产生较大干扰。
This paper proposed a numerical simulation method for the self-propelled turning motion of ships,with the aim of solving the problems of the high cost of maneuvering the self-propelled turning test of a ship,low efficiency of existing mature simulation methods,and single analysis elements.We used the commercial CFD software Star CCM+to simulate the self-propelled turning motion of a trimaran model under propeller and rudder forces at a full rudder angle of 30°and a half rudder angle of 15°.Then,we compared the simulation results with the relatively mature results of the constrained mode simulation based on the mathematical model group(MMG)model.The analysis results revealed that the differences in transverse distance,longitudinal distancet,urning diameter,initial turning diameter,and other maneuvering turning elements of the trimaran used in the simulation at full and half rudder angles were all within 7%.This finding verifies the reliability of the numerical simulation method of self-rotating motion proposed in this paper.Moreover,using the numerical simulation method of the self-propelled turning motion of a trimaran to simulate and calculate the target ship model helped obtain not only the turning performance elements of the ship model in plane motion but also the multi-degree-offreedom motion response elements,such as rolling,pitching,and heaving of the ship model.In addition,we analyzed the response factors(rolling,pitching,and heaving)of the trimaran in self-turning motion at full and half rudder angles.From the perspective of qualitative analysis,the simulation results of various motion response elements are consistent with the phenomena generated when the actual ship is rotating.From a quantitative perspective,the results of all motion response elements obtained by simulating the target ship model are gooda,nd no considerable interference is observed when the ship model rotates.
作者
于东
周军伟
李金华
桂洪斌
王威
YU Dong;ZHOU Junwei;LI Jinhua;GUI Hongbin;WANG Wei(School of Ocean Engineering,Harbin Institute of Technology at Weihai,Weihai 264209,China;Institute of Oceanographic In-strumentation,Qilu University of Technology(Shandong Academy of Sciences),Qingdao 266061,China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2023年第10期1645-1653,共9页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(51309070)
山东省自然科学基金项目(ZR2021ME146)
先进航空动力创新工作站项目(HKCX-2019-01-005,HKCX2020-02-024).
关键词
自航
回转运动
数学模型方程组
回转性能
三体船
计算流体力学
数值模拟
操纵性
ship self-propelled movement
turning motion
mathematical model group(MMG)
turning perfor-mance
trimaran
computational fluid dynamics
numerical simulation
maneuverability
