通过求解非定常RANS方程,选取SST k-ω湍流模型,采用全六面体网格进行离散,在忽略自由面兴波影响的情况下,对KVLCC1裸船体在深水和浅水中的PMM试验纯横荡运动粘性流场进行了数值模拟,计算了作用在船体上的水动力和力矩;通过将计算结果与现有的试验数据对比,验证了该文方法的有效性。在此基础上,根据水动力和力矩计算结果,计算得到了船舶横荡运动线性水动力导数。
By solving the unsteady RANS equations with a SST k-ω turbulence model,numerical simulation of viscous flow around a naked KVLCC1 hull undergoing pure sway motion is conducted.The hull has been tested with planar motion mechanism in deep and shallow water.In numerical simulation,hexahedral grids are adopted and the influence of free surface elevation is ignored.The hydrodynamic force and moment acting on the hull are calculated.The proposed numerical method is verified by comparing the numerical results of hydrodynamic force and moment with available experimental results. Based on the numerical results of hydrodynamic force and moment,linear hydrodynamic derivatives of ship maneuvering are determined.