期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于Boussinesq方程近岸波浪演变的数值研究 被引量:2
1
作者 王培涛 于福江 《海洋预报》 北大核心 2012年第4期7-17,共11页
首先对目前描述近岸波浪传播变形的数学模型进行了回顾与总结;对不同数学模型的特点、适用范围和发展情况进行了阐述与对比。应用基于Boussinesq方程的Coulwave模式针对几个经典实验地形进行了数值实验,数值结果和实验实测数据吻合较好... 首先对目前描述近岸波浪传播变形的数学模型进行了回顾与总结;对不同数学模型的特点、适用范围和发展情况进行了阐述与对比。应用基于Boussinesq方程的Coulwave模式针对几个经典实验地形进行了数值实验,数值结果和实验实测数据吻合较好。此外,分别采用不同的近岸波浪模型模拟了某渔港附近波浪的传播变形,结果表明:当考虑波浪的折射、绕射、反射联合作用时,Coulwave模式计算结果明显较缓坡方程及SWAN模型计算结果更加合理。 展开更多
关键词 BOUSSINESQ型方程 近岸波浪模型 缓坡方程SWAN模型 Coulwave模型
下载PDF
Determination of fractional energy loss of waves in nearshore waters using an improved high-order Boussinesq-type model
2
作者 何海伦 宋金宝 +1 位作者 Patrick J. Lynett 李爽 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2009年第3期621-629,共9页
Fractional energy losses of waves due to wave breaking when passing over a submerged bar are studied systematically using a modified numerical code that is based on the high-order Boussinesq-type equations.The model i... Fractional energy losses of waves due to wave breaking when passing over a submerged bar are studied systematically using a modified numerical code that is based on the high-order Boussinesq-type equations.The model is first tested by the additional experimental data,and the model's capability of simulating the wave transformation over both gentle slope and steep slope is demonstrated.Then,the model's breaking index is replaced and tested.The new breaking index,which is optimized from the several breaking indices,is not sensitive to the spatial grid length and includes the bottom slopes.Numerical tests show that the modified model with the new breaking index is more stable and efficient for the shallow-water wave breaking.Finally,the modified model is used to study the fractional energy losses for the regular waves propagating and breaking over a submerged bar.Our results have revealed that how the nonlinearity and the dispersion of the incident waves as well as the dimensionless bar height(normalized by water depth) dominate the fractional energy losses.It is also found that the bar slope(limited to gentle slopes that less than 1:10) and the dimensionless bar length(normalized by incident wave length) have negligible effects on the fractional energy losses. 展开更多
关键词 breaking waves Boussinesq-type equations nearshore wave modeling fractional energy loss
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部