As a national key construction sea area,the trend of offshore wind power construction in the Jiangsu sea area towards the open sea is the main trend of future development.The open sea areas have more surge components,and the wave spectrum often appears in the form of bimodal spectrum.Therefore,the wave characteristics of bimod-al spectrum waves need further in-depth research to provide reference basis for offshore construction.Based on the observation data of the buoy station throughout 2018,1 223 bimodal spectral data were obtained through outlier testing and bimodal spectral identification.The bimodal spectral characteristics of waves in the Jiangsu sea area were studied,and different typical bimodal spectral types were compared.The fitting of the measured bimodal spec-tra was carried out,and the corrected spectral width parameters were proposed.The dependency relationship between the correction coefficient,peak rise factor,and spectral width parameters was explored,and the bimodal spectral fitting expression was obtained.The results indicate that the Ochi-Hubble spectrum proposed based on the North Atlantic sea area and the Torsethaugen spectrum proposed based on the Norwegian sea area are not applic-able to the bimodal spectrum type in the Jiangsu sea area.The bimodal JONSWAP fitting spectrum proposed in this paper has adaptability and can scientifically and reasonably describe the bimodal spectrum in the Jiangsu sea area,and is widely applied to different wind and terrain conditions in the sea area.
维普
万方数据