摘要
通过对帆式张网模型水池试验，研究了帆式张网网中部分网衣结构对网具性能的影响。试验表明，（1）背腹网网口网衣弧形剪裁后，背腹网网衣受力均匀程度明显改善，网具阻力平均下降3．9％，网口垂直扩张平均增加4．7％，水平扩张平均增加7.2％。（2）背腹、侧网网口网衣剪成弧形后，网具阻力平均下降24．2％，水平扩张低速时有所下降，但高速时开始增加，平均增幅为3．5％。侧网网口网衣弧形剪裁对网日垂直扩张影响不大。
Research on effect of structure of the net mouth of strow net with canvas spreader on net performance was carried out and discussed in this paper, through model testing in towing tank. The test showed: 1.By curve cutting in the top and bottom parts of the net mouth, net drag decreased by 3. 9% averagely,vertical opening and horizontal spreading averagely increased by 4. 7% and 7. 2% respectively. 2. Through curve cutting in the top, bottom and side parts of the net mouth, net drag decreased by 24. 2% averagely, horizontal spreading went down slightly at low current speed but increased at higher current speed. Curve cutting in side parts of net mouth had little effect on vertical opening.
出处
《海洋水产研究》
CSCD
2000年第2期61-65,共5页
Marine Fisheries Research
关键词
帆式张网
背腹网
侧网
弧形剪裁
网具性能
网衣
Stow net with canvas spreader Top and bottom panel Side panel Curve cutting Performance
