两船在静水中的兴波干扰数值计算

使用VOF方法计算两排水量相当的船型在静水中兴波的水动力干扰,计算时采用两型值一样的Wigley船作为对象,湍流模式选择了RNG k-ε模型。在模拟计算时,变化两船的航速以及两船的间距,得到不同状态下的兴波波形。将得到的波形加以比较分析,进而得出兴波值最大的位置。低速时兴波最大值出现在距船首1/3船长左右的位置,高速时兴波最大值出现在距船首2/3船长左右的位置。将计算结果与实验结果相比较,令人比较满意,证明这种算法是很有效的,为以后的较为复杂的船型两船干扰模拟计计算提供了一些参考。

Numerical Simulation of Wave-Making Interactions Between Two Ships in Calm Water

Numerical simulation on wave-making interactions between two ships with similar displacement was carried out by the VOF method.Two Wigley ships with the same form were used,and RNG k-ε model turbulent flow model was employed in the calculation.Different spacing and speed were investigated in the simulation to obtain the wave height distribution and the maximum wave height positions between two ships.The maximum wave height emerges at one-third length of the ship at low speed and two-third length at relatively high speed.This result is in accordance with the model test data which proves the availability of the calculation method.More complicated simulation of the interactions between two ships can be built on this method.