空波包理论在海浪群性研究中的应用  

Application of the Empty Excursion-Envelope Theory to the Study of Sea Wave Groupness

作　　者：郑桂珍[1] 黄旭仁[2] 徐德伦[1] 

机构地区：[1]青岛海洋大学,青岛266003 [2]海军航空工程学院青岛分院,青岛266041

出　　处：《青岛海洋大学学报（自然科学版）》2002年第5期673-679,共7页Journal of Ocean University of Qingdao

摘　　要：用 Monte Carlo方法数值模拟海浪 ,研究其波包曲线跨某参考水平的波包中空波包所占的平均比例 ,并与 Ditlevsen和 L indgren关于空波包的理论相比较。结果表明 ,在二阶近似下该理论近似适用于海浪。在此基础上对 Longuet- Higgins的群性波包理论进行修正。修正后的理论与数值结果的比较表明本文所做的修正是十分有效的。The ocean waves are simulated with the Monte Carlo method of which the fraction of empty excursion envelopes (FEEE) is investigated and compared with the theory of FEEE due to Ditlevse and Lindgren. The comparison shows that to a second order approximation the theory is applicable to sea wave envelopes. Based on these the wave envelope theory of wave groups due to Longuet Higgins is modified. A comparison between the numerical results and the theoretical ones shows that the correction made in this paper is quite effective. The shortcomings inherent in the theory of longuet Higgins are overcome in the corrected theory.

关 键 词：空波包理论 海浪 波群 波包 蒙特卡罗模拟 

分 类 号：P731.22[天文地球—海洋科学]