中国工程科学Issue(9)：69-77,9.
圆形重力式网箱流场效应的试验研究
Experimental study on flow field effect of circular gravity net cage
摘要
Abstract
In order to understand hydrodynamic characteristics of circular gravity net cage in varied flow field,and obtain both the flow velocity variations and flow field distribution inside and around net cages,four models (C1,C2,C3,C4) were designed to be measured at specific measurement points at a velocity of 0.068 m/s,0.105 m/s,0.143 m/s and 0.182 m/s by acoustic Doppler velocimeter (ADV) and particle image velocimetry (PIV) technique. The experimental data showed that the measurement result of ADV was basically the same with that of PIV tech-nique. The ratio of flow velocity reduction inside a net cage remained approximately the same in different flow velocities. On the effect of the flow velocity reduction,the net cages with small mesh did better than the net cages with big mesh,and the net cages with diamond mesh did better than the net cages with round mesh at the same flow velocity. As current flowed through multiple net cages,the flow velocity was gradually reduced. The flow velocity inside and downstream from the net cages decreased with increasing number of net cages. The flow ve-locity reduction was 67.6%inside the second net cage,88.2%inside the forth net cage,and 72.1%downstream from multiple net cages. This research can provide a reference to a suitable type of net cages used in aquaculture production practice.关键词
网箱/ADV/PIV/流速/流场分布Key words
net cage/ADV/PIV/flow velocity/flow field distribution分类
农业科技引用本文复制引用
刘超,关长涛,崔勇,赵侠,李梦杰,李真真,王腾腾..圆形重力式网箱流场效应的试验研究[J].中国工程科学,2014,(9):69-77,9.基金项目
现代农业产业技术体系建设专项资金（CARS-50）；国家自然科学基金（31101938，51239005）；山东省科技发展计划项目 （）
