Utilizing computational fluid dynamics(CFD),this study analyzes the relative pitching motion amplitude and conversion efficiency of the parallelogram raft wave energy converter(R-WEC)under wave current conditions,exam...Utilizing computational fluid dynamics(CFD),this study analyzes the relative pitching motion amplitude and conversion efficiency of the parallelogram raft wave energy converter(R-WEC)under wave current conditions,examining the effects of power take-off(PTO)parameters,wave parameters,and flow velocity on R-WEC hydrodynamic performance.The research includes an analysis of a single point mooring system to determine optimal mooring conditions.Through comparative analysis of energy conversion efficiency across 10 single mooring modes and nine double-mooring modes,the study evaluates their impact on the R-WEC.Findings demonstrate that flow velocity adversely affects wave energy capture.Energy conversion efficiency exhibits an initial increase followed by a decrease as damping coefficient or wave frequency coefficient increases.An optimal anchor chain unit mass coefficient exists that maximizes R-WEC energy conversion efficiency.The dual mooring system demonstrates marginally enhanced energy conversion efficiency compared with single mooring,with specific impacts on R-wave energy converters(WECs)documented.These findings provide valuable reference data for R-WEC design optimization and operational strategies to enhance conversion efficiency.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.52071348 and 51979129)。
文摘Utilizing computational fluid dynamics(CFD),this study analyzes the relative pitching motion amplitude and conversion efficiency of the parallelogram raft wave energy converter(R-WEC)under wave current conditions,examining the effects of power take-off(PTO)parameters,wave parameters,and flow velocity on R-WEC hydrodynamic performance.The research includes an analysis of a single point mooring system to determine optimal mooring conditions.Through comparative analysis of energy conversion efficiency across 10 single mooring modes and nine double-mooring modes,the study evaluates their impact on the R-WEC.Findings demonstrate that flow velocity adversely affects wave energy capture.Energy conversion efficiency exhibits an initial increase followed by a decrease as damping coefficient or wave frequency coefficient increases.An optimal anchor chain unit mass coefficient exists that maximizes R-WEC energy conversion efficiency.The dual mooring system demonstrates marginally enhanced energy conversion efficiency compared with single mooring,with specific impacts on R-wave energy converters(WECs)documented.These findings provide valuable reference data for R-WEC design optimization and operational strategies to enhance conversion efficiency.
