摘要
[目的]“定位艏型”自航绞吸挖泥船的水动力性能与普通船型相比存在较大差异,为合理选择和设计自航绞吸挖泥船的船尾型线,进行水动力性能分析。[方法]采用计算流体力学(CFD)方法开展船模阻力试验数值验证,并在此基础上对比分析双呆木艉和双尾鳍艉这2种船尾型线的静水阻力性能、艉部流场、轴向伴流分数及不均匀度等水动力性能。[结果]结果显示,在各航速下,双尾鳍艉的总阻力系数小于双呆木艉;在设计航速点,双尾鳍艉的总阻力系数较双呆木艉小8.6%,而双呆木艉的伴流目标函数(WOF)较双尾鳍艉小11.0%,轴向伴流场更均匀。[结论]研究结果可为同类船型的型线设计和优化提供参考价值。
[Objective]As the hydrodynamic performance of a positioning bow type self-propelled cutter suction dredger(CSD)is significantly different from that of an ordinary ship,this paper analyzes its performance in order to assist in the rational selection and design of stern lines.[Methods]First,the computational fluid dynamics(CFD)method is applied to carry out simulation verification and model resistance test validation.On this basis,the hydrodynamic performance of two hulls with different stern shapes,namely twin deadwood and twin skeg,are compared and analyzed in aspects including calm water resistance behavior,stern wake field,axial wake fraction,and nonuniform level of axial wake field.[Results]The total resistance coefficient of the twin skeg hull is lower than that of the twin deadwood hull at each target speed.At the design speed,the total resistance coefficient of the former is 8.6%lower than that of the latter,while the wake object function(WOF)of the latter is judged to be better than that of the former by 11.0%in terms of nonuniform level of axial wake field.[Conclusion]The results of this study can provide valuable references for the line design and optimization of similar hull types.
作者
余欣
杨剑涛
何炎平
倪连松
王有江
刘亚东
YU Xin;YANG Jiantao;HE Yanping;NI Liansong;WANG Youjiang;LIU Yadong(School of Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;CCCC Tianjin Dredging Co.,Ltd.,Tianjin 300461,China;Jiangsu Haixin Shipping Heavy Industries Co.,Ltd.,Haimen 226100,China)
出处
《中国舰船研究》
北大核心
2025年第2期166-174,共9页
Chinese Journal of Ship Research
基金
中央高校基本科研业务费专项资金资助项目。
关键词
船型
减阻
水动力
流场
伴流目标函数
船艉型线
定位艏型自航绞吸挖泥船
hulls(ship)
drag reduction
hydrodynamics
flow fields
wake object function(WOF)
stern hull lines
positioning bow type self-propelled cutter suction dredger
作者简介
余欣,男,1989年生,硕士,工程师。研究方向:船舶总体设计与水动力研究。E-mail:xinyu@sjtu.edu.cn;杨剑涛,男,1976年生,高级工程师。研究方向:疏浚船舶设计、研发、监造和造船管理。E-mail:yangjiantao666@sina.com;通信作者:何炎平,男,1971年生,博士,教授,博士生导师。研究方向:大型绞吸挖泥船设计和关键技术。E-mail:hyp110@sjtu.edu.cn。
