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Abstract The increasing demand for developing offshore renewable power plants sparks a search for designing floating units that can effectively support energy conversion systems in terms of power storage and transfer, whilst being located far from the shore. The modularized floating structures initiative is highly valued for its ability to easily adjust its operational range to match the capacity of variable energy systems by adding or removing structural members. The circular cross-section’s superior resilience against fatigue and hydrodynamic pressure, as compared to other cross-sections, has prompted an investigation of a tension leg platform modularized by cylindrical members as presented in this paper. The study focuses on a hydrodynamic assessment under various wave conditions. Consequently, a range of centre of buoyancy and volume moments of inertia is triggered by different module sizes and arrangements for a constant displacement. Amongst the numerous possible variations, three module arrangements are subjected to JONSWAP wave spectra. The mooring system assumes linear stiffness with four single-string tendons in the perpendicular configuration. The study employs a linear potential model to calculate the structure’s hydrodynamic responses. The comparison of results illustrates the significant impact of volumetric characteristics on the structure’s operation. Hydrodynamic coefficients, kinematics of the structure and tension loads are scrutinized and comprehensively compared.
Abbasnia et al. (Sun,) studied this question.