圆形重力式网箱阻力性能研究  

Hydraulic Resistance of Gravity Cage with Cylinderical Shape

作　　者：王鲁民[1] 黄洪亮[1] 王明彦[2] 

机构地区：[1]农业部海洋与河口渔业重点开放实验室,上海200090 [2]中国水产科学研究院东海水产研究所,上海200090

出　　处：《中国海洋大学学报（自然科学版）》2004年第4期555-559,共5页Periodical of Ocean University of China

基　　金：国家"十五"科技攻关项目 (2 0 0 1 BA5 0 5 B0 2 0 2 )资助

摘　　要：采用网箱模型试验 ,对周长 5 0 m,深 8m的 HDPE双管圆形重力式网箱 ,在不同配重、网片规格和流速条件下的阻力性能进行研究。结果表明 ,在 2 .5 kn的相对流速范围内 ,网箱的整体阻力在 75 0 0 kg以内 ;在网箱整体阻力中 ,框架及重锤阻力所占比重较小 ,而网箱箱体阻力占近90 %。不同重锤配重的网箱 ,其整体阻力与流速均呈幂函数关系 F=a Vb,网箱重锤配重增加 ,网箱阻力也随之增大 。The hydraulic resistance of gravity cage, which is cylinderical shape with a perimeters of 50m and a depth of 8m, is tested by using a cage model in a flume tank. The results show that the hydraulic resistance of gravity cage is below 7 500kg, when the velocity of flow is lower than 2.5kn. The resistance of gravity cage is mainly caused by the section of the net, which accounts for about 88% of the whole resistance, When the gravity cage is equipped with aplummet of different weight, the relation between hydraulic resistance and velocity of flow is F=aV b , and the hydraulic resistance of gravity cage increases with the increasing of the plummet weight. However, the incidence that the weight affect on the cage resistance decreases along with the increasing of the velocity of water flow.

关 键 词：重力式网箱 模型试验 阻力 海水网箱养殖 

分 类 号：S967.3[农业科学—水产养殖]