摘要： 离岸围网设施通常布置在开阔水域，受波流作用影响显著。为确保围网结构的安全，需对其水动力特性开展研究。为此，以一种浮绳式围网为研究对象，通过拖曳水池试验对围网整体阻力性能进行分析。根据有限单元法建立波浪作用下围网结构受力的数学模型，通过计算机数值模拟对围网浮子的最大位移与网衣张力进行研究。结果显示：随着流速的增大，围网整体阻力逐渐增加，阻力与流速呈幂函数关系，阻力最大值为196 kN。当浮绳式围网在波浪作用下，上纲中迎浪面中点处浮子的位移最大，位移值为80 mm，网片与锚绳连接点及下纲四角连接处的网线张力较大。建议适当增加迎流面网衣所配备的浮力，以使围网在较高流速时保持形状。此外，在实物网衣的制作中，锚绳与下纲四角连接处的网衣应做加固处理。

关键词: 浮绳式围网, 阻力性能, 有限元, 网衣张力

Abstract: The offshore net enclosure is usually located in open sea and affected by the wave and current obviously. It is necessary to carry out study on hydrodynamic characteristics for the safety of the net enclosure. Herein, a kind of float-type net enclosure is chosen to analyze the resistance characteristics of net enclosure through towing tank experiment. A numerical model of the net enclosure structure in wave is developed based on the finite element method, and then the maximum displacement of the float and the tension of net are studied through computer simulation. The results show that the resistance of the net enclosure increases with the velocity of flow. There is a power function relationship between resistance and velocity. The maximum resistance is 196 kN. The displacement of the float at the midpoint of head line is the maximum when the float-type net enclosure is under wave. The maximum displacement is 80mm. Furthermore, the tension of the net at the points where the net connects with the mooring line and the lower four corners is greater. It is suggested to increase the buoyancy of net at incident flow side to maintain the shape of the net enclosure under high speed flow. Moreover, the net where the mooring line connects with the lower four corners should be reinforced in the production of actual net.

Key words: Float-type net enclosure, resistance characteristics, finite element, tension of net