海浪流场作用下的邮轮实船运动仿真

Research on cruise ship navigation simulation under the action of wave field

邮轮推进器的选择对于船舶营运影响重大,为了获得适应真实海况的邮轮,有必要研究风浪流对船舶航行的影响。本文针对大型邮轮在真实海况下顶浪航行的运动响应和阻力变化等问题,基于CFD方法建立了数值波浪水池,对实船尺度下的网格划分依据收敛性进行调整,以JONSWAP海浪谱为基础模拟了不规则波浪的生成与传播,并通过对实尺度船舶在多种海况下顶浪航行的数值模拟得到实尺度船舶在海浪中航行时的阻力值变动及运动响应情况,通过对比分析研究了不同海况对船舶顶浪航行的影响。对实船在真实海况下的仿真与预测为实际邮轮推进的选型提供了依据。

The choice of cruise ship propeller has a great impact on ship operation.In order to obtain a cruise ship suitable for the real sea conditions,it is necessary to study the influence of wind,wave and current on ship navigation.In view of the motion response and resistance variation of large cruise ships under real sea conditions,a numerical wave tank is established with CFD method,the mesh generation is adjusted according to the convergence,and the generation and propagation of irregular waves based on JONSWAP wave spectrum are simulated.Through the numerical simulation of the real scale ship sailing in various sea conditions,the change of resistance value and the motion response of the real scale ship sailing in the sea wave are obtained,and the influence of different sea conditions on the ship's self navigation is studied through comparative analysis.The simulation and prediction of the real ship under the real sea conditions provides the basis for the actual cruise propulsion selection.