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个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:水利工程系
学科:港口、海岸及近海工程. 船舶与海洋结构物设计制造
办公地点:大连理工大学 海岸和近海工程国家重点实验室 海洋工程研究所A区402室
联系方式:ypzhao@dlut.edu.cn
电子邮箱:ypzhao@dlut.edu.cn
Numerical Analysis on the Effects of Submerged Depth of the Grid and Direction of Incident Wave on Gravity Cage
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论文类型:期刊论文
发表时间:2009-06-01
发表刊物:CHINA OCEAN ENGINEERING
收录刊物:ISTIC、CSCD、SCIE、EI、Scopus
卷号:23
期号:2
页面范围:233-250
ISSN号:0890-5487
关键字:submerged depth of grid; gravity cage; physical model test; numerical simulation
摘要:In this paper, the numerical model of the net cage with the grid mooring system in waves is set up by the lumped mass method and rigid kinematics theory, and then the motion equations of floating system, net system, mooring system, and floaters are solved by the Runge-Kutta fifth-order method. For the verification of the numerical model, a series of physical model tests have been carried out. According to the comparisons, between the simulated and experimental results, it can be found that the simulated and experimental results agree well in each condition. Then, the effects Of Submerged depth of grid and direction of incident wave propagation on hydrodynamic behaviors of the net cage are analyzed. According to the simulated results, it can be found that with the increase of submerged depth of grid, the forces acting on mooring lines and bridle lines increase, while the forces on grid lines decrease; the horizontal motion amplitudes of floating collar decrease obviously, while the vertical motion amplitudes of floating collar change little. When the direction of incident wave propagation changes, forces on mooring lines and motion of net cage also change accordingly. When the propagation direction of incident wave changes from 0 degrees to 45 degrees, forces on the main ropes and bridle ropes increase, while the forces on the grid ropes decrease. With the increasing propagation direction of incident wave, the horizontal amplitude of the forces collar decreases, while the vertical amplitude of the floating collar has little variation.