渔业现代化2016，Vol.42Issue(6)：39-44,6.DOI:10.3969/j.issn.1007-9580.2016.06.008
双层网底鲆鲽网箱耐流特性的数值模拟
Numerical simulation of the anti-current characteristics of double-bottom cages for flounder fish
摘要
Abstract
The bottom frame of flounder fish cages with double bottom floors would incline and rotate in current. To ensure the cage bottom structure safety, it is necessary to carry out dynamic analysis for the anti-current characteristics of the cages. Herein, based on the finite element method, a numerical model of the double-bottom cage deformation in current force is developed and then the maximum displacement and pitch of the double bottom are studied. In addition, the calculated results of double-bottom cage are compared with those of single-bottom cage. The simulation results show that the pitches of the upper and lower bottom floors increase along with the increase of flow velocity, and the dip directions of the two bottom floors are just opposite. It is found that when the flow velocity exceeds 93 cm/s in sea, the upper and lower bottom floors of the cage would collide with each other and affect the safety of the cage bottom. Moreover, the displacement of the lower bottom of double-bottom cage is larger than the bottom displacement of the single bottom cage, but the pitch of lower bottom is smaller than the bottom pitch of the single bottom cage, which might be related to the design of the upper bottom of the cage.关键词
双层网底/耐流特性/有限元/鲆鲽网箱Key words
double-bottom/anti-current characteristics/finite element method/flounder fish cage分类
农业科技引用本文复制引用
崔勇,关长涛,李娇,公丕海..双层网底鲆鲽网箱耐流特性的数值模拟[J].渔业现代化,2016,42(6):39-44,6.基金项目
现代农业产业技术体系建设专项（CARS－50－G05）；鳌山科技创新计划（2015ASKJ02－03）；国家自然科学基金 （）
