摘要
本文通过在东海水产研究所，主尺度为90m×6in×3In的试验水池内进行模型试验，试验网箱是以圆柱形网箱为基础，在网箱箱体深度的1／2处设置了一个中环，将原来的圆形重力式网箱改造成新型自减流低形变网箱，网箱周长为50m、中环周长75m、深8m，研究其箱体内流速的变化。试验结果表明新型网箱的减流效果比原网箱提高5．8％一13．9％，自减流低形变离岸深水网箱的箱体内部流速比箱体外界流速平均减小25．3％，可有效降低箱体内的海水流速，减小养殖鱼类在网箱内长时间顶流游泳的强度，为养殖鱼类提供良好的生存、生长环境。
The double-pipeline round gravity cage was madeas cage model and made experiments in flume tank with the size of 90 m x 6 m x 3 m. The experimental cage is cylinder. A middle ring were set up at half of depth of cage, and modified reducing current velocity cage were as subject investigated, which was 50 m, depth was 8 m and middle ring was 75 m. The results showed the reducing current velocity effect of new cage increased 5.68%-8.16% compared with that of original cage. The inner current velocity of reducing current velocity cage decreased 25.33% averagely compared with external current velocity. The reducing current velocity cage effectively reduced velocity of inner cage, decreased against the stream swimming intensity of fish and supply good growing environment for cultured fishes.
出处
《现代渔业信息》
2011年第9期19-21,共3页
Journal of Modern Fisheries Information
基金
国家高新技术研究发展(863计划)专项(2006AA100301)
中央级公益性科研院所基本科研业务费专项资金(中国水产科学研究院东海水产研究所)资助项目(2009T07)
浙江省科技计划项目(2008C12066)
上海市科学技术委员会资助课题(103919N0900)共同资助
关键词
模型试验
水动力性能
深水网箱
减流效果
model test
hydrodynamic property
deep sea-cage
effect of reducing current velocity
