Estimation of Hydrodynamic Coefficients of Floating Offshore Structures using the Aggregated Unfitted Finite Element Method
Jan Modderman (TU Delft - Offshore Engineering)
Oriol Colomés (TU Delft - Offshore Engineering)
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Abstract
This work presents a novel application of an Aggregated unfitted Finite Element Method (AgFEM) to solve the linear radiation potential flow problem in the frequency domain to estimate added mass and added damping for floating structures of arbitrary geometry. The flexibility of AgFEM in handling complex geometries makes it a compelling alternative to conventional techniques. The governing equations of the flow problem and the dynamics of the structure are fully coupled. Two case studies are conducted, estimating the loads on a spar and semisubmersible. The results demonstrate that AgFEM captures the general trends of the added mass and damping.