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

在时域上模拟了悬架船在头波中的运动响应。首先，建立了双船体的网格模型。然后，对船体表面各面板的压力进行了评估和综合。根据该船的面板模型，推导了双船体的水动力系数和波浪荷载。其次，利用OrcaFlex建立了一个简化的悬架船模型。通过与拖曳舱试验结果的比较，验证了悬挂船在刚性和自由模式下的模拟运动响应。结果表明，所建立的仿真模型是合理的。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，在一定程度上可以减小舱室的升沉和俯仰。然而，这也揭示了被动控制系统的局限性，表明需要考虑更先进的控制策略。综上所述，建立了一个基本的仿真模型来预测零推进速度下悬架船在头浪中的运动响应。

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.