【摘要】 文章基于CFD(Computational Fluid Dynamics)对一艘带有月池的海洋工程船静水阻力问题在模型尺度下进行了数值模拟,计算采用RANS方法,结合VOF方法模拟自由面兴波。从倒圆半径和内壁开孔率两个方面分析了月池构型对船体阻力性能的影响,并将数值模拟结果与模型试验结果进行了对比。结果表明:数值模拟得到的倒圆半径和内壁开孔率对船体阻力的影响趋势与模型试验结果一致,船体总阻力对月池底部倒圆半径比较敏感,但随航速的增加,敏感性降低。相比月池底部倒圆半径,内壁开孔率对船体阻力影响较小。更多还原

【Abstract】 In the paper, the effect of moonpools in model scale on ship resistance in calm water was studied by numerical simulation for a multi-purpose vessel based on CFD tool. The RANS method, together with VOF method, was adopted for free wave simulation. The effect of moonpools was studied, considering bottom rounded radius and damping grid aperture ratio and the results of the numerical simulation were compared with those of model tests. Model test results reveal that the tendency on the effect of moonpools with bottom rounded radius and grid aperture ratio on the increment of ship resistance agreed with that of the model tests.The effect of bottom rounded radius is sensitive, but the higher the speed is, the weaker the effect on ship resistance is. The effect of damping grid aperture ratio is smaller than that of bottom rounded radius.更多还原