一、前言海浪是由无数不同频率和波向的组成波迭加而成.因而用单一的规则波来研究建筑物周围的波浪绕射将与实际情况有一定的出入.为更好地模拟任意形状人工岛周围的波浪绕射,本文在规则波绕射数学模型的基础上,运用线性迭加不同振幅、频率和方向组成波的方法,对青岛海洋大学文圣常等人新提出的风浪频谱和COS~2nθ型的方向分布函数,建立了人工岛周围不规则波绕射的数学模型.尔后,用建立的 I. INTRODUCTION Waves are composed of countless waveforms of different frequencies and wave directions, so using a single regular wave to study the wave diffraction around a building will have some discrepancies with the actual situation. To better simulate any Based on the mathematic model of regular wave diffraction, this paper applies the method of linearly superimposing waves with different amplitudes, frequencies and directions to analyze the wave spectrum newly proposed by Wen Sheng et al. At Qingdao Ocean University And COS ~ 2nθ-type direction of the distribution function, the artificial island around the irregular wave diffraction mathematical model was established. Later, with the established