Multiphysics modelling and experimental verification of a suspension ship running at head seas

在时域内模拟了悬浮船在顶浪中的运动响应。首先建立了双体船体的网格模型。然后，对各壁板对船体表面的压力进行了评估和积分。通过对双体船的面元模型计算，得到了双体船的水动力系数和波浪载荷。其次，利用OrcaFlex建立了一个简化的悬浮船模型。通过与拖曳水池试验结果的对比，验证了悬浮船在刚性模态和自由模态下的运动响应仿真结果。结果表明，仿真模型是合理的。最后，通过改变悬架的弹簧刚度和阻尼系数来调节控制力。结果表明，该方法可以将舱室的升沉和纵摇减小到一定程度。然而，这也暴露了被动控制系统的局限性，表明应该考虑更先进的控制策略。总之，建立了一个基本的仿真模型，预测了悬浮船在零航速时在头波中的运动响应。

Motion responses of the suspension ship in head waves were simulated in the time domain.Firstly, a mesh model of the twin hull was constructed. Then, the pressure of each panel on the surface of the hull was evaluated and integrated. The hydrodynamic coefficients and wave load of the twin-hull were derived from the panel model of the ship. Next, a simplified suspension ship model was built using OrcaFlex. The simulated motion responses of the suspension ship at the rigid and free modes were verified by comparing them with the towing tank experimental results. The results showed that the simulation model was reasonable. Finally, the control forces were tuned by changing the suspension’s spring stiffness and damping coefficients. It was found that the heave and pitch of the cabin could be reduced to a certain level. However, this also revealed the limitations of the passive control system, indicating that more advanced control strategies should be considered.In summary, a basic simulation model has been developed to predict the motion responses of a suspension ship in head waves at zero advancing speed.