Parametric Study of a Taut Compliant Mooring System for a FOWT Compared to a Catenary Mooring

Journal of Marine Science and Engineering

StianKielland Garvik¹  MagnusThorsen Bach-Gansmo¹  JonasBjerg Thomsen¹  MortenThøtt Andersen¹ 

[1] Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg Ø, Denmark;

关键词: synthetic mooring ropes;    marine renewable energy;    taut mooring;    footprint;    floating offshore wind turbine;    FOWT;   

DOI  :  10.3390/jmse8060431

来源: DOAJ

【 摘 要 】

The catenary mooring system is a well recognized station keeping method. However, there could be economical and environmental benefits of reducing the footprint. In the last decades, more focus has been given to synthetic mooring lines and different mooring layouts to optimize the levelized cost of energy (LCOE) for offshore renevable energy converters such as wave energy converters. Therefore, this work presents a parametric study of two important parameters, namely the mooring line angle and line pretension, for a taut mooring configuration focusing on the dynamic response when applied to the TetraSpar floating foundation compared to a catenary mooring system. The work is based on experimental results conducted in the wave basin at Aalborg University (AAU) and compared to analytical stiffness calculations. In addition, a numerical model was tuned based on the main dynamics to achieve the tension response. The results showed satisfying dynamic behavior where the angle and pretension mainly influenced the surge and yaw natural periods. The motion response showed similar behavior between the chosen parameters, and larger pitch amplitudes were found compared to the catenary system.

【 授权许可】

Unknown