Numerical Simulation of Dynamic Response of A Net Cage for Flatfish in Waves

• Published in: China ocean engineering Vol. 28; no. 1; pp. 43 - 56
• Main Author: 桂福坤 赵云鹏 许条建 关长涛
• Format: Journal Article
• Language: English
• Published: Heidelberg Chinese Ocean Engineering Society 01.03.2014
• Subjects: Cage; Coastal Sciences; Collars; Engineering; Fish; Floats; Fluid- and Aerodynamics; Frames; Marine; Marine & Freshwater Sciences; Mathematical models; Mooring; Numerical and Computational Physics; Oceanography; Offshore Engineering; Rigid-body dynamics; Simulation; 动态响应; 底部框架; 数值模型; 数值模拟; 最大张力; 比目鱼; 物理模型试验; 网箱; flatfish cage; physical model test; motion response; numerical simulation
• ISSN: 0890-5487; 2191-8945
• DOI: 10.1007/s13344-014-0003-x

A numerical model of flatfish cage is built based on the lumped mass method and the principle of rigid body kinematics. To validate the numerical model, a series of physical model tests are conducted in the wave flume. The numerical results correspond well with the data sets from physical model test. The effect of weight of bottom frame, height of fish net and net shape on motion responses of fish cage and tension force on mooring lines is then analyzed. The results indicate that the vertical displacements of float collar and bottom frame decrease with the increase in the weight of bottom frame; the maximum tension force on mooring lines increases with the increasing weight of bottom frame. The inclination angles of float collar and bottom frame decrease with the increasing net height; the maximum tension force increases obviously with the increase of net height.