Diffracted hydrodynamic force evaluation method for double-cylinder breakwater array containing energy dissipation plates

The invention discloses a diffraction hydrodynamic force evaluation method for a double-cylinder type breakwater array containing energy dissipation plates, and belongs to the technical field of coast engineering, and the method comprises the following steps: S1, building coordinate systems, taking the intersection point of the center of a concentric cylinder structure and a still water surface as an original point, building N cylindrical coordinate systems and N Cartesian coordinate systems, and enabling the z-axis to be vertically upward; s2, a drainage basin is divided, and the whole flow field is divided into an outer domain and an inner domain; s3, assuming an opening boundary condition; S4, determining diffraction velocity potentials of an inner domain and an outer domain; s5, establishing an inner domain and outer domain diffraction velocity potential linear equation set; and S6, deriving a hydrodynamic expression. According to the method, the interaction effect is comprehensively considered, complex w