Wave diffraction from a truncated cylinder with a moonpool of arbitrary cross-section: A semi-analytical study

In this paper, a semi-analytical model is proposed to solve the diffraction problem from cylinder with moonpool. The and moonpool can be in arbitrary shapes. Linear potential flow theory eigenfunction matching method are adopted analytical model. After dividing fluid domain into three regions (i.e., region beneath cylinder; inner enclosed by exterior outer cylinder), diffracted spatial potentials each expressed series of eigenfunctions. continuity conditions between adjacent together Fourier combined employed determine unknown coefficients expressions potentials. well-known incident waves obtained then used directly compute wave excitation forces/moments acting on volume flux. Analytical results flux compared numerical using boundary element solver. Wave cases different shapes either hull or finally tested