一种钢质围网渔船波浪运动响应分析

Analysis of Motion Response in Wave of the Steel Seine Boat

为研究渔船在波浪上的运动响应,基于势流理论,通过建立全船有限元模型的方法进行计算分析。以某一围网渔船为例,计算目标渔船在频域下的附加质量、势流阻尼系数以及运动响应幅值等一系列水动力参数,研究浪向角与波频对围网渔船运动响应的影响,探究目标渔船在设定环境参数下需要避免的航行状态。计算结果表明:在各个浪向角下,横摇是对渔船性能影响最大的运动形式,在航行过程中需要特别避免某些特征波频段的横浪。在该特征波频段减小浪向角,可以大大减小船舶横摇响应,从而保证船舶的航行安全。

In order to study the fishing boats motions in waves,a method for the finite element model of the whole ship was established to analyze was proposed based on the theory of potential flow.Take a seine boat as an example,it needs to analyze a series of hydrodynamic parameters such as additional mass,potential damping coefficient and amplitude of motion response of the target fishing boat in the frequency domain,and to research the influence of wave direction and wave frequency on the motion response of the Seine boat,explore the state of navigation that the target boat needs to avoid under set environmental parameters.The calculation results show that rolling is the most important motion which affects the performance of fishing boats at all wave angle.In the process of navigation,transverse waves belong to special frequency range should be avoided.In this special frequency range,it is suggested to navigation safety by reducing the wave angle to reduce the roll response.