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<p>This study presents a numerical analysis of the hydrodynamic behaviour of floating solar platform (FSP) arrays under irregular wave conditions. A three-column FSP, originally designed for the North Sea, is expanded to include multi-body configurations, 3-TriFloatSol and 4-TriFloatSol, connected by double-ended ball-jointed rigid beams. The analyses focus on interactions within the platform arrays, changes in the air gap, and the effect of array configuration on dynamic performance. Results indicate minimal operational concern regarding the air gap, although occasional negative air gaps are observed in some bodies under worst-case scenarios. The interconnected configurations effectively reduce relative motions, keeping safe distances between platforms and limiting longitudinal and lateral displacements to around 2&#xa0;m, compared to the 5.7&#xa0;m column diameter. Spectral analysis reveals two resonance peaks in surge and sway: a low-frequency response (&lt; 0.2&#xa0;rad/s), attributed to the influence of springs (mooring lines), and a high-frequency peak (~ 1.8&#xa0;rad/s), resulting from structural coupling. Elevated eigenfrequencies for heave, pitch, and roll (&gt; 1.3&#xa0;rad/s) are also observed, indicating potential for amplified motions in low-energy sea states. These results highlight key hydrodynamic features of FSP arrays and, at the conceptual design level, can guide future investigations and support the development of more refined models and design strategies.</p>

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Platform dynamics and hydrodynamic assessment of TriFloatSol offshore floating solar

  • 期刊论文

  • 发表日期：

    2025年10月13日

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  • Arefeh Emami,
  • Madjid Karimirad

摘要

This study presents a numerical analysis of the hydrodynamic behaviour of floating solar platform (FSP) arrays under irregular wave conditions. A three-column FSP, originally designed for the North Sea, is expanded to include multi-body configurations, 3-TriFloatSol and 4-TriFloatSol, connected by double-ended ball-jointed rigid beams. The analyses focus on interactions within the platform arrays, changes in the air gap, and the effect of array configuration on dynamic performance. Results indicate minimal operational concern regarding the air gap, although occasional negative air gaps are observed in some bodies under worst-case scenarios. The interconnected configurations effectively reduce relative motions, keeping safe distances between platforms and limiting longitudinal and lateral displacements to around 2 m, compared to the 5.7 m column diameter. Spectral analysis reveals two resonance peaks in surge and sway: a low-frequency response (< 0.2 rad/s), attributed to the influence of springs (mooring lines), and a high-frequency peak (~ 1.8 rad/s), resulting from structural coupling. Elevated eigenfrequencies for heave, pitch, and roll (> 1.3 rad/s) are also observed, indicating potential for amplified motions in low-energy sea states. These results highlight key hydrodynamic features of FSP arrays and, at the conceptual design level, can guide future investigations and support the development of more refined models and design strategies.