波浪作用下筏式养殖设施的数值模拟  

Numerical simulation of raft-cultivation model under wave action

作　　者：邓推[1] 董国海[1] 赵云鹏[1] 李玉成[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,大连116024

出　　处：《渔业现代化》2010年第2期26-30,共5页Fishery Modernization

基　　金：国家科技支撑计划"东海区重要渔业资源调查及名优水产增养殖的关键技术研究与示范"(2007BAD43B00);国家科技支撑计划"东海区浅海健康高效养殖技术开发与示范"(2007BAD43B07)

摘　　要：基于浙江海洋学院提出的新型筏式养殖模型,将浮标简化为质点,将梗绳简化为集中质量构件,建立浮标和梗绳构件受力模型和运动方程,采用4阶Runge-kutta法求解运动方程,对新型筏式养殖系统在波浪作用下的整体运动情况进行模拟,分析浮标在波浪下的运动响应和波浪入射角度对锚绳力的影响,考察梗绳材料对浮标水平位移幅度的影响。结果显示:筏式养殖系统上部浮标在风浪中的水平位移幅度很大,将系统主轴安排与波浪的入射方向一致时,锚绳受力最小,选用PA材料锚绳相对于PE材料锚绳能减小浮标的水平位移幅度。This paper is to provide theoretical basis for the designing,manufacturing and safe using of the raft-cultivation system.Based on the new raft-cultivation model which designed by Zhejiang Ocean University.The buoys are simplified as movement points,the long line is simplified as a series of lumped-mass components.Mechanical model and motion equations are built by employing the lumped-mass method.4th order Runge-kutta method is used to solve the motion equations,the motion response of the new raft-cultivation model under wave action has been simulated,the impact of longline material to the maximum horizontal displacements of the buoys is also investigated.The results show that： the maximum horizontal displacements of the buoys are huge,it is best to arrange the main axis of system in the same direction with the incident wave to reduce mooring line force.Compared with PE mooring line,PA mooring line can bring smaller horizontal displacement of buoys.

关 键 词：筏式养殖 波浪 数值模拟 

分 类 号：S953[农业科学—水产养殖]