面向极端波浪模拟的圆形全向聚焦波合成算法与试验研究

Algorithm and Experimental Study of Circular Omnidirectional Focused Wave Synthesis for Extreme Wave Simulation

为再现极端聚焦波浪,基于传统二维双叠加聚焦法,改进谱峰频率、频带、波幅分配方法等,创新研发了圆形全向聚焦波合成算法。该算法实现了极端聚焦波与图形类聚焦波的模拟生成,如单峰聚焦波、双峰聚焦波、偏心聚焦波、旋转聚焦波、D形类聚焦波等多种聚焦波形,并可对聚焦位置、高度、直径、垂直度等波浪形态进行精准控制,且能模拟强非线性波,生成高达10 m的上冲射流,冲速达到13.8 m/s,亦可模拟常规波形,包括旋转波、驻波等规则波,满足传统波浪试验的需求。

To reproduce extreme focused waves,based on the traditional two-dimensional double superposition focusing method,the spectral peak frequency,frequency band and wave amplitude distribution method have been improved,and a circular omnidirectional focused wave synthesis algorithm has been innovatively developed.The algorithm achieves the simulation of extreme focused waves and graphic focused waves,such as single-peaked focused waves,double-peaked focused waves,eccentric focused waves,rotating focused waves,and D-shaped focused waves.It is also capable to accurately control the focal position,height,diameter,verticality and other wave forms.Moreover,it can simulate strong nonlinear waves such as generating up jets with a height of up to 10 m and an impulse velocity of 13.8 m/s.In addition,the algorithm has the ability to simulate conventional waveforms,including rotating waves,standing waves and other regular waves,to fulfill the demand of traditional wave tests.