Determining the onset and strength of unforced wave breaking in a numerical wave tank

被引：4
|
作者：
He Hai-lun [1 ]
Song Jin-bao [2 ]
机构：
[1] State Ocean Adm, State Key Lab Satellite Ocean Environm Dynam, Inst Oceanog 2, Hangzhou 310012, Zhejiang, Peoples R China
[2] Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
来源：
CHINA OCEAN ENGINEERING | 2014年 / 28卷 / 04期
基金：
中国国家自然科学基金;
关键词：
wave breaking; numerical wave tank; fractional energy loss; breaking strength coefficient; DEEP-WATER WAVES; SURFACE; HYDROFOIL;
D O I：
10.1007/s13344-014-0041-4
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A numerical wave tank is used to investigate the onset and strength of unforced wave breaking, and the waves have three types of initial spectra: constant amplitude spectrum, constant steepness spectrum and Pierson-Moscowitz spectrum. Numerical tests are performed to validate the model results. Then, the onset of wave breaking is discussed with geometric, kinematic, and dynamic breaking criteria. The strength of wave breaking, which is always characterized by the fractional energy loss and breaking strength coefficient, is studied for different spectra. The results show how the energy growth rate is better than the initial wave steepness on estimating the fractional energy losses as well as breaking strength coefficient.
引用
收藏
页码：501 / 509
页数：9
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