TY - JOUR
T1 - On mooring line tension and fatigue prediction for offshore vertical axis wind turbines
T2 - a comparison of lumped mass and quasi-static approaches
AU - Cevasco, D.
AU - Collu, M.
AU - Rizzo, C. M.
AU - Hall, M.
PY - 2018/4/1
Y1 - 2018/4/1
N2 - Despite several potential advantages, relatively few studies and design support tools have been developed for floating vertical axis wind turbines. Due to the substantial aerodynamics differences, the analyses of vertical axis wind turbine on floating structures cannot be easily extended from what have been already done for horizontal axis wind turbines. Therefore, the main aim of the present work is to compare the dynamic response of the floating offshore wind turbine system adopting two different mooring dynamics approaches. Two versions of the in-house aero-hydro-mooring coupled model of dynamics for floating vertical axis wind turbine (FloVAWT) have been used, employing a mooring quasi-static model, which solves the equations using an energetic approach, and a modified version of floating vertical axis wind turbine, which instead couples with the lumped mass mooring line model MoorDyn. The results, in terms of mooring line tension, fatigue and response in frequency have been obtained and analysed, based on a 5 MW Darrieus type rotor supported by the OC4-DeepCwind semisubmersible.
AB - Despite several potential advantages, relatively few studies and design support tools have been developed for floating vertical axis wind turbines. Due to the substantial aerodynamics differences, the analyses of vertical axis wind turbine on floating structures cannot be easily extended from what have been already done for horizontal axis wind turbines. Therefore, the main aim of the present work is to compare the dynamic response of the floating offshore wind turbine system adopting two different mooring dynamics approaches. Two versions of the in-house aero-hydro-mooring coupled model of dynamics for floating vertical axis wind turbine (FloVAWT) have been used, employing a mooring quasi-static model, which solves the equations using an energetic approach, and a modified version of floating vertical axis wind turbine, which instead couples with the lumped mass mooring line model MoorDyn. The results, in terms of mooring line tension, fatigue and response in frequency have been obtained and analysed, based on a 5 MW Darrieus type rotor supported by the OC4-DeepCwind semisubmersible.
KW - coupled dynamics
KW - Floating vertical axis wind turbine
KW - mooring dynamics
KW - mooring line tension
UR - http://www.scopus.com/inward/record.url?scp=85044380580&partnerID=8YFLogxK
U2 - 10.1177/0309524X18756962
DO - 10.1177/0309524X18756962
M3 - Article
AN - SCOPUS:85044380580
SN - 0309-524X
VL - 42
SP - 97
EP - 107
JO - Wind Engineering
JF - Wind Engineering
IS - 2
ER -