数值研究畸形波的生成和演化(英文)  

Numerical Study on Generation and Evolution of Freak Waves

作　　者：崔成[1] 张宁川[1] 裴玉国[1] 刘乾烈[2] 

机构地区：[1]大连理工大学海岸及近海工程国家重点实验室,辽宁大连116024 [2]大连理工大学深海工程研究中心,辽宁大连116024

出　　处：《船舶力学》2012年第12期1373-1384,共12页Journal of Ship Mechanics

摘　　要：使用改进的VOF方法建立2维数值水槽模拟3组实测畸形波和4组非指定畸形波,并分析了畸形波的特征和演化规律。研究结果显示,畸形波并非独立的异常波浪现象,而是与连续大波(大波群)和深谷相伴发生。极端大波和深谷的联合影响对船舶和海洋工程结构的潜在威胁可能远远大于"瞬态"的畸形波,应该引起高度的重视。Simulations of generation and evolution of three field observed nated freak waves are carried out in a 2-D numerical wave tank （NWT） waves and four non-desig- built by using an improved volume of fluid （VOF） method. The features and evolution behavior are analyzed consequently. The results show that freak waves are very likely accompanied by the successive large waves （large wave sequence） and deep troughs, rather than an independent abnormal phenomenon. The potential threat to vessels and maritime structures caused by the combined effect of the extreme waves and deep trough may be far beyond the ＂transient＂ freak wave, which should be paid more attention.

关 键 词：畸形波 生成和演化过程 数值模拟 

分 类 号：U661.1[交通运输工程—船舶及航道工程]