Effect of different incident waves on the motion characteristics of free-floating structures
Based on the open source DualSPHyscis,the wave numerical tank and the interaction between the wave and the free floating structure with different shapes are simulated.The Stokes second-order regular wave is generated by applying a predefined function to the wave plate,the damping zone is set to the down-stream boundary.First,it is verified that the method can correctly solve the interaction between the wave and the floating body and compared with the existing literature results,the agreement is good.Then,the in-teraction between the wave and the structure of the free-floating body is simulated,considering different wave heights,wave periods and different shape parameters of the floating body(A/B=1～5),to explore the waves affected by the structure of the free floating body at different shape parameters.The change char-acteristics of forces and the response characteristics of degrees of freedom,and the different wave parame-ters are analyzed,and the results of circular cylinder floating body are introduced as a comparative analy-sis.In addition,the distribution characteristics of the flow field around the floating body,the trajectory of the center and the velocity vector are introduced to further elaborate the force characteristics and the degree of freedom response characteristics of the floating body.As the shape parameter increases,the maximum wave force on the floating structure will gradually decrease.The energy of the floating body significantly ex-pands with the wave energy increasing due to a larger wave height.
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