The advanced numerical methods with new model and scheme, to reduce the requirements of the computation times and computer resources for seakeeping predictions, are urgent according to the International Towing Tank Conference seakeeping committee. In the present study, different propulsion models are used to implement the seakeeping performance simulations of a self-propelled surface ship sailing in waves. Both the accuracy and the computational cost are investigated. Four different propulsion models for self-propelled surface ship simulation including the discretized propeller model, the descriptive body-force method, the Osaka University method and the modified Osaka University method were studied. Uncertainty analyses are conducted separately for hull, propeller in calm water and ship motions in waves. Numerical simulations in calm water and waves are carried out to obtain the ship attitudes, resistance, motion responses and added resistance. Self-propulsion simulations in calm water and waves are performed to obtain the propeller rotation speed, the ship motions and the speed loss. Four wavelengths (\(\lambda /L_{{{\text{pp}}}} = 0.65,0.85,1.15,1.95\)) of regular head waves with a wave steepness of 1/60 are considered according to the benchmark case of the Tokyo 2015 Computational Fluid Dynamics Workshop. The self-propulsion simulation results of the thrust, torque, ship motions and speed loss using different propulsion models have been compared to each other. It can be found that all the differences of speed loss are less than 2% and these of heave and pitch amplitudes are less than 6.13%. The modified Osaka University method, which provides numerical results closest to those of the discretized propeller model, is an alternative method for ship self-propulsion simulations in waves.

国际拖曳水池会议耐波委员会认为，采用新模型和新方案的先进数值方法，以减少耐波性预测的计算次数和计算机资源的要求，是当务之急。在本研究中，使用不同的推进模型来实现在波浪中航行的自航水面船舶的耐波性能模拟。研究了准确性和计算成本。研究了离散螺旋桨模型、描述体力法、大阪大学法和大阪大学修正法等四种不同的自航水面舰艇推进模型。分别对船体、静水螺旋桨和波浪中的船舶运动进行不确定性分析。在静水和波浪中进行数值模拟，得到船舶的姿态、阻力、运动响应和附加阻力。在静水和波浪中进行自航模拟，获得螺旋桨转速、船舶运动和速度损失。四个波长（\(\lambda /L_{{{\text{pp}}}} = 0.65,0.85,1.15,1.95\) )根据东京基准案例考虑波陡度为 1/60 的规则首波2015 年计算流体动力学研讨会。对使用不同推进模型的推力、扭矩、船舶运动和速度损失的自航仿真结果进行了相互比较。可以发现，速度损失的差异均小于 2%，而垂荡和纵摇幅度的差异均小于 6.13%。修改后的大阪大学方法提供的数值结果最接近离散螺旋桨模型的结果，是波浪中船舶自推进模拟的替代方法。