Design And Hydrodynamic Performance Analysis Of A Floating Marine Ranching Equipment

According to the data from the International Food Strategy Institute,marine fisheries will be one of the most developing industries in the future.Under the circumstances of the reduction of land resources and increased environmental pollution,the development of marine resources has gradually attracted worldwide attention.Floating marine ranching equipment can not only meet the needs of marine fishery production,but also restore the marine environment,utilize marine energy and ensure the sustainable development and utilization of marine resources,which is well in line with today's green development of marine resources.In this paper,a marine ranching equipment with marine energy device and intelligent breeding equipment is proposed,which is based on the theory derivation,basic design and numerical simulation,and it also satisfies the design code of cage master and semi-submersible platform.The paper mainly carried out four parts of work.Firstly,the design of the marine ranching equipment was carried out according to the sea conditions of the Yellow Sea.The selection,installation and structural strength and stability of marine energy devices were analyzed.Then,the load calculation of the marine energy device and the netting under different working conditions is completed by using the method of theory and numerical simulation,and the hydrodynamic load and deformation of the net clothing are analyzed.Next,the frequency-domain hydrodynamic characteristics of the equipment in the marine ranching are analyzed based on the three-dimensional potential flow theory.Finally,the random behaviors of two mooring systems under the design condition and self-storage condition are simulated,and the differences in behaviors of the net equipment in the wave and current are compared between the power generation platform without net and the net cage.The influences of the net cage in the system on determining the displacement and mooring load of the device is analyzed.The marine ranching equipment designed in this paper provides power for the aquaculture equipment through the marine energy device,which solves the problem of difficulty in large-scale and intelligent breeding of deep-sea cages to some extent,and is conducive to the modernization of the marine ranching.This paper can provide a reference for the development of new deep-sea aquaculture equipment,realize interdisciplinary integration and complementarity,and promote the construction of China's marine ranching equipment to be practical more quickly.