With the large-scale density stratified tank and the numerical flume proposed, series of numerical cases in line with the experiments are carried out to investigate the interaction between the tension leg platforms (TLPs) and the internal solitary waves (ISWs). The waveforms, and the loads and the torques on the TLP obtained by the experiments and the simulations agree well with each other. Experimental results show that the amplitudes of the dimensionless horizontal force and torque linearly increase with the dimensionless amplitude, while that of the vertical force increases in a parabolic curve. Besides, the numerical results indicate that the horizontal and vertical forces on the TLP due to the ISWs can be divided into three components, namely, the wave pressure-difference forces, the viscous pressure-difference forces, and the frictional force that is negligible. The wave pressure-difference forces are always the major constituents. However the viscous pressure-difference component is unimportant, it is negligible as compared with the vertical forces.

提出了大型密度分层水箱和数值水槽，进行了一系列与实验相符的数值案例，研究了张力腿平台（TLP）与内部孤立波（ISW）之间的相互作用。通过实验和模拟获得的波形，TLP上的负载和扭矩彼此吻合得很好。实验结果表明，无量纲的水平力和转矩的振幅随无量纲的振幅线性增加，而垂直力的大小呈抛物线曲线。数值结果表明，由ISW引起的在TLP上的水平力和垂直力可以分为三个部分，即波浪压差力，粘性压差力，摩擦力可以忽略不计。波浪压差力始终是主要成分。但是，粘性压差分量并不重要，与垂直力相比可以忽略不计。