Abstract: A submersible net cage flotation/submersion system with helical pipes arranged in a circle is designed to regulate horizontally stable floating and sinking motions via pipes filled with water, and injection of high-pressure air by buoyancy to investigate lifting movement characteristics of submersible net cage, and to improve flotation/ submersion performance of a net cage. The rationality of the system was investigated at various current speeds of 0, 4, 7, 10, and 13 cm/s. It was found that the system had floating collar uniformly forced and greatly suppresses inclination of the net cage and concomitant deformation of the flexible chemical fiber nets, with the stable floating and sinking net cage in still water and steady currents. The maximum inclination angle of the floating collar is increased significantly compared with still water condition as the cage rises and sinks under steady currents, and the maximum inclination angle increases at high flow velocity. The results showed that the system had the floating collar more uniformly forced and greatly suppressed inclination of the net cage and concomitant deformation of the flexible chemical fiber nets, which is useful reference with offshore cage design.
王非, 毕春伟, 赵云鹏. 静水和纯流下可沉浮式网箱升降运动特性研究[J]. 大连海洋大学学报, 2020, 35(1): 141-.
WANG Fei, BI Chunwei, ZHAO Yunpeng. Lifting movement characteristics of submersible net cages under still water and steady currents. Journal of Dalian Ocean University, 2020, 35(1): 141-.
2020, Vol. 35 
