Based on laboratory experiments and numerical simulations, the scale effect of Internal Solitary Wave (ISW) loads on spar platforms is investigated. First, the waveforms, loads, and torques on the spar model at a laboratory obtained by the experiments and simulations agree well with each other. Then, a prototype spar platform is simulated numerically to elucidate the scale effect. The scale effect for the horizontal forces is significant owing to the viscosity effect, whereas it is insignificant and can be neglected for the vertical forces. From the similarity point of view, the Froude number was the same for the scaled model and its prototype, while the Reynolds number increased significantly. The results show that the Morison equation with the same set of drag and inertia coefficients is not applicable to estimate the ISW loads for both the prototype and laboratory scale model. The coefficients should be modified to account for the scale effect. In conclusion, the dimensionless vertical forces on experimental models can be applied to the prototype, but the dimensionless horizontal forces of the experimental model are larger than those of the prototype, which will lead to overestimation of the horizontal force of the prototype if direct conversion is implemented.

基于实验室实验和数值模拟，研究了内部孤立波（ISW）荷载在翼梁平台上的尺度效应。首先，通过实验和模拟获得的在实验室中的翼梁模型上的波形，负载和扭矩彼此非常吻合。然后，对一个原型晶石平台进行数值模拟，以阐明尺度效应。由于粘性效应，水平力的比例效应显着，而水平力的比例效应则微不足道，并且对于垂直力可以忽略不计。从相似性的角度来看，缩放模型及其原型的弗洛德数相同，而雷诺数则显着增加。结果表明，具有相同阻力和惯性系数集的Morison方程不适用于估算原型模型和实验室规模模型的ISW载荷。应修改系数以解决缩放效应。总之，可以将实验模型的无量纲垂直力施加到原型上，但是实验模型的无量纲水平力要大于原型的水平量，如果直接转换为零，则会导致对原型的水平力的高估。已实施。