中国水产科学2012，Vol.19Issue(5)：889-899,11.DOI:10.3724/SP.J.1118.2012.00889
波浪作用下一种鲆鲽类方形网箱水动力特性数值模拟研究
Numerical investigation of hydrodynamic properties of gravity cage for flatfish culture during exposure to wave action
摘要
Abstract
We analyzed the hydrodynamic properties of a gravity cage for flatfish culture during exposure to wave action. We constructed a numerical model to simulate the hydrodynamic behavior of the float collar, the base frame system, and the mooring system, the primary sections involved in withstanding waved-induced forces acting on the net cage structure. We conducted a series of experiments to validate the numerical model. The numerical model appeared to predict the experimental behavior well (mean relative error was <9%), suggesting our model can be used to accurately predict the primary hydrodynamic behavior of gravity cages in waves. After validating the numerical model, we evaluated the effect of the weight of the base frame and the height of the net pen on mooring line tension and cage motion. The mooring-line tension increased by 13% and 19% and the inclination decreased by 8.8% and 9.3% as the weight of base frame increased from 80 to 100 g and from 80 to 140 g, respectively. Thus, increasing the weight of the base frame in favor of decreasing the inclination results in an increase in the tension on the mooring lines of-15%. The values for these parameters decreased by <10% when the height of net pen was increased from 20 to 30 cm. The motion of the base frame was reduced slightly due to an increase in the forces acting on the float collar and the base frame of the cage net. Based on our observations, we offer suggestions regarding the design and optimization of cages for flatfish culture.关键词
重力式网箱/物理模型试验/水动力特性/数值模拟Key words
gravity cage/ model test/ hydrodynamic properties/ numerical simulation分类
农业科技引用本文复制引用
赵云鹏,陈小芳,许条建,关长涛,崔勇..波浪作用下一种鲆鲽类方形网箱水动力特性数值模拟研究[J].中国水产科学,2012,19(5):889-899,11.基金项目
国家自然科学基金项目(51239002) （51239002）
国家海洋863计划资助项目(2006AA100301) （2006AA100301）
国家自然科学基金创新群体项目(50921001) （50921001）
现代农业产业技术体系建设专项资金资助项目(CARS-50-G05) （CARS-50-G05）
山东省科技发展计划项目(2009GG10005005). （2009GG10005005）
