摘要
通过引入四阶非线性薛定谔方程,基于随机波列演化的Benjamin-Feir不稳定性,采用伪谱方法建立了二维深水波浪数值水槽来模拟海洋中的畸形波现象.为了验证该数值模型的有效性,计算了二维水槽中边带扰动随机波列的传播变形,通过比较数值和试验结果发现该模型可以很好地再现畸形波现象.
In this paper, the four-order nonlinear Schrodinger equations and the pseudo-spectral method are introduced to develop a 2-D numerical water flume based on the Benjamin-Feir instability of random wave trains, which is adopted to simulate the freak waves in deep water. In order to verify the efficiency of the numerical water flume, the propagation distortion of random wave trains with sideband disturbances in a 2-D water flume is then simulated. The numerical results are finally compared with the test ones, showing that the proposed model simulates freak waves well.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第6期113-116,123,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(10772068)
国家"863"计划项目(2006AA05Z426)
