The influence of regular wave and irregular wave on the mechanical characteristics of a triple-cylinder bundle structure

By using the open source DualSPHysics, the interaction between wave and a triple-cylinder bundle structure is numerically investigated. The wave is generated by applying the predefined function to the wave maker, and the free surface and the velocity of the regular wave and irregular wave are compared with the theoretical data at the measuring point. To verify the feasibility of the numerical method for simulating the fluid-structure interaction, the numerical results of smooth particle hydrodynamics (SPH) model are compared with the experimental and theoretical data, which shows a good agreement. Finally, 95 groups of cases of the interaction between wave and triple-cylinder bundles (TPB) are calculated, and the wave force acting on TPB is explored at different rotation angles. The effects of different wave parameters on the wave force characteristics are further analyzed. The results of a single vertical cylinder are introduced for making a comparison. For the regular wave case, the wave force acting on the structure is higher than that of the irregular wave case. When the rotation angle is 90°, the wave force on the TPB is the maximum; and it reaches the minimum at 180°.