TY - JOUR
T1 - A novel tool for floating offshore wind substructures design
T2 - Validation and definition of design guidelines
AU - Alonso-Reig, Maria
AU - Mendikoa, Iñigo
AU - Petuya, Victor
N1 - Publisher Copyright:
© 2024
PY - 2024/12
Y1 - 2024/12
N2 - An efficient frequency-domain numerical tool for the preliminary design of Floating Offshore Wind (FOW) substructures has been developed, investigated, and validated against a state-of-the-art time-domain method. This tool, focused on floating substructures and particularly semi-submersible platforms, aims to expedite the design process. Its originality lies in coupling two novel methods to determine hydrodynamic loads: one estimates linear hydrodynamic coefficients, and the other predicts second-order wave loads. Combined with a simplified frequency domain response model, it enables rapid assessment of the dynamics of various platform designs, thus accelerating preliminary design. To minimise computational costs, certain simplifications have been adopted, such as assuming negligible interaction effects between platform members. This assumption enhances the method's accuracy, particularly when platform columns are spaced further apart for a given diameter. Despite these simplifications, the tool has shown to produce results comparable to existing methods regarding FOW structures’ dynamic behaviour, helping identify the most suitable platform designs for further evaluation in advanced design phases. Its notable efficiency also makes it suitable for sensitivity analyses, enhancing understanding of FOWT dynamic behaviour and quantifying the influence of different parameters on platform design.
AB - An efficient frequency-domain numerical tool for the preliminary design of Floating Offshore Wind (FOW) substructures has been developed, investigated, and validated against a state-of-the-art time-domain method. This tool, focused on floating substructures and particularly semi-submersible platforms, aims to expedite the design process. Its originality lies in coupling two novel methods to determine hydrodynamic loads: one estimates linear hydrodynamic coefficients, and the other predicts second-order wave loads. Combined with a simplified frequency domain response model, it enables rapid assessment of the dynamics of various platform designs, thus accelerating preliminary design. To minimise computational costs, certain simplifications have been adopted, such as assuming negligible interaction effects between platform members. This assumption enhances the method's accuracy, particularly when platform columns are spaced further apart for a given diameter. Despite these simplifications, the tool has shown to produce results comparable to existing methods regarding FOW structures’ dynamic behaviour, helping identify the most suitable platform designs for further evaluation in advanced design phases. Its notable efficiency also makes it suitable for sensitivity analyses, enhancing understanding of FOWT dynamic behaviour and quantifying the influence of different parameters on platform design.
KW - Design guidelines
KW - Floating offshore wind
KW - Frequency domain tool
KW - Hydrodynamic loads
KW - Preliminary design
KW - Semi-submersible platform
UR - http://www.scopus.com/inward/record.url?scp=85207563640&partnerID=8YFLogxK
U2 - 10.1016/j.apor.2024.104275
DO - 10.1016/j.apor.2024.104275
M3 - Article
AN - SCOPUS:85207563640
SN - 0141-1187
VL - 153
JO - Applied Ocean Research
JF - Applied Ocean Research
M1 - 104275
ER -