ABSTRACT

Wave impacts on a semi-submerged platform have a great influence on the structure. Physical experiments and numerical simulations are carried out based on fixed horizontal deck and column-slab combined structures. During the physical experiments, the impact pressures acting on the horizontal decks are measured to verify the accuracy of the numerical models. In the SPH program, by equipping with GPU parallel acceleration processing framework and adopting the dynamic boundary particles method, the total calculation time shortens more than 6 times and the gap near the wavemaker has been eliminated, improving the efficiency and accuracy of numerical calculation significantly. The similarities and differences of the pressure amplitude and distribution between the two structures are summarised and compared. Due to the presence of the columns, the wave energy transmission is largely influenced, and the relationship between the peak pressure and velocity distribution is also demonstrated. The influence of the columns is both considerable and crucial.

摘要

波浪对半淹没平台的影响对结构有很大影响。基于固定水平甲板和柱板组合结构进行了物理实验和数值模拟。在物理实验中，测量作用在水平甲板上的冲击压力以验证数值模型的准确性。在SPH程序中，通过配备GPU并行加速处理框架并采用动态边界粒子方法，总计算时间缩短了6倍以上，并且消除了波发生器附近的间隙，从而显着提高了数值计算的效率和准确性。总结并比较了两种结构之间压力幅值和分布的异同。由于存在列，波能量的传输受到很大的影响，并且还证明了峰值压力与速度分布之间的关系。色谱柱的影响既重要又至关重要。