摘要
船行波的大小直接影响到两岸的岸堤、护坡和船间效应,同时船行波的波形和波浪参数对航道宽度规划、护岸工程设计等也有着重要的参考意义。运用常用的计算流体力学分析软件STAR-CCM+,基于CFD技术构建了某水域电动游览船实船仿真模型,通过求解RANS数值方程并结合RNGκ-ε湍流模型、VOF多相流模型和6DOF运动学模型模拟分析了内河某浅水航道两艘电动游览船对遇的情形,对比分析了船行波的波形耦合及船行波对两船船体和岸堤的影响。结合6DOF与重叠网格模型仿真分析了对遇两船由驶近到驶离不同局面下两船的运动状况,研究了两船之间的船行波波高的变化。数值计算和模拟试验结果表明,船行波对小型船舶两船的船间作用干扰明显,船行波波高变化明显,船行波波形耦合响应逼真。研究结果真实、可靠,具有较高的使用价值,可为主管单位管理船舶、合理调度、保障通航安全提供有效数据支持和理论依据。
This paper intends to make a numerical simulation of the situation of 2 ships meeting and response in the shallow water areas. Since the size of the ship’s pushing wave may have direct effects on the river bank and influence the slope protection and ship-to-ship regular navigation with their bodies getting too near.At the same time,we have also observed and examined their changes of the waveforms and parameters as the principal reference data for designing the channel width and bank protection data needed. For the above said necessity,the paper has managed to construct a real ship simulation model for the electric watercraft in a certain water area by using a conventional computational fluid dynamics analysis software known as the STAR-CCM + based on the CFD technology. And,furthermore,we have also simulated a group of 2 electric tour boats travelling waves,in addition to other physical models,such as by RANS numerical method,RNG-turbulence model,the VOF multiphase flow model,as well as by the 6 DOF kinematics model. In our simulated study,we have also monitored the pitching,the heaving motions of the patrol craft in the sailing conditions in a different situation in the shallow water whereas the coupling and reflection of the ship waves and their effect on the hull of the 2 ships with the river effect of the banks further analyzed. Besides,we have also studied the wave state and the effect of the ships’ traveling waves on the hulls and the side fronts of the 2 ships.Thus,as combined with the 6 DOF and overlapping grid model,we have done the motion analysis of the 2 ships in the different situations from the point of view of the departure of the 2 ships,with our observation and discussion of the variation of the ships’ wave height between them. Through the above numerical calculation and simulation,we have noticed that the traveling waves of the ships indeed interfere the mutual interaction between them,whose results demonstrate that the wave height has been made significantly changed with a realistic response. Therefore,what we have done in the theoretical research and numerical simulation based on the actual engineering requirement is qualified enough to provide effective reference to the relevant departments to manage the ship design and dispatch so as to ensure the safety and security of its navigation.
作者
章文俊
周世博
刘宏伟
李泽华
王平林
薛宗耀
闫成勇
ZHANG Wen-jun;ZHOU Shi-bo;LIU Hong-wei;LI Ze-hua;WANG Ping-lin;XUE Zong-yao;YAN Cheng-yong(Navigation College,Dalian Maritime University,Dalian 116026,Liaoning,China)
出处
《安全与环境学报》
CAS
CSCD
北大核心
2020年第3期975-980,共6页
Journal of Safety and Environment
基金
国家自然科学基金项目(51879024)
辽宁省自然科学基金项目(2018228002,20180551040,20180520034)。
关键词
安全工程
浅水航道
对遇
船行波
STAR-CCM+
数值模拟
safety engineering
shallow water channel
ships’meeting
ship wave
STAR-CCM+
numerical simulation
