NUMERICAL MODELING OF THE ELASTIC DEFORMATION OF A RING IN WATER WAVES
Fish farming in the open ocean has been becoming a dominant form of fishery aquaculture due to the dramatic drop of fishery resources in the near shore, so an anti-stormy fish cage in deep water is increasingly becoming an important tool for the open ocean aquaculture industry. The flotation ring, as a pivotal component of a gravity-type cage, not only supports the fish containment but also provides sufficient flotation. It oscillates under the action of water waves, and even may be destroyed in the serious wave climate. Therefore, it is essential to study its motions and deformations by means of physical model tests and numerical modeling. The flotation ring moored by four mooring cables is simplified as a circular ring in the present numerical simulation. And the governing equations of the ring’s rigid-body motions coupled with in-plane elastic deformations are obtained according to Newton’s second law. To solve the equations, the modal superposition method is applied to the elastic deformation. By comparing with the experimental data, some appropriate coefficients are chosen in good use of the numerical calculation. It is concluded that the elastic deformation is very important for the safety and stability of the ring.
S. H. Hao G. H. Dong Z. Zong
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian,11 Department of Naval Architecture, Dalian University of Technology, Dalian, 116024, Liaoning,China
国际会议
第四届亚太地区海岸会议(the Fourth International Conference on Asian and Pacific Coasts)
南京
英文
2007-09-21（万方平台首次上网日期，不代表论文的发表时间）