基于SWAN模式的波浪能发电装置输入能量计算方法研究

Research on Calculation Method of Input Energy of Wave Energy Device Based on SWAN Mode

本文应用第三代海浪模式SWAN模型,构建出中国南海大万山岛海域的数值波浪场,驱动风场则采用由CCMP大气模式提供的当地卫星风场数据,对“长山号”波浪能发电装置海试期间的有效波高、平均周期等海浪要素进行数值模拟。此外,将数值模拟得到的波浪参数与仪器的现场实测数据进行对比,分析了SWAN模式中底摩阻、波浪破碎、风能输入与白浪耗散等参数对模拟结果的影响,最终得到了适合该海域数值模型的最佳参数配置,并将优化后模型提取的波浪参数带入波浪能公式计算了装置输入的波浪功率。研究成果可为利用数值模拟方法计算波浪能发电装置的输入能量提供参考。

A third-generation sea-wave model SWAN was utilized to construct a wave numerical model for Wanshan Island in the South China Sea in this study.Based on the satellite wind field data provided by the atmospheric model CCMP,the numerical simulation of the wave elements of the sea area during the operation of the ‘Changshan’ wave energy generating device has been carried out.After comparing the simulation results with the actual measured data of the instrument,the influence of each parameter in the SWAN mode on the simulation results was analyzed,such as bottom friction,wave breaking,wind energy input and white wave dissipation.Finally,the best parameter configuration which is suitable for the numerical model of the sea area came to be obtained and the formula was taken to calculate the wave energy power input by the device.It is obvious that the research results could provide a reference for calculating the input energy of wave energy devices by using numerical simulation methods.