Determination of fractional energy loss of waves in nearshore waters using an improved high-order Boussinesq-type model
文献类型：CNKI期刊论文
| 作者 | He HL(何海伦); Song JB(宋金宝); Patrick J. Lynett; Li S(李爽)
|
| 发表日期 | 2009-08-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | breaking waves Boussinesq-type equations nearshore wave modeling fractional energy loss |
| 英文摘要 | 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. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Science Fund for Distinguished Young Scholars (No 40425015) ; the Knowledge Innovation Programs of the Chinese Academy of Sciences (Nos KZCX1-YW-12 and KZCX2-YW-201) |
| 卷 | v.27期:03页:203-211 |
| 语种 | 英文; |
| 分类号 | P731.22 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/192488]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.GraduateSchool,ChineseAcademyofSciences 2.InstituteofOceanology,ChineseAcademyofSciences 3.KeyLaboratoryofOceanCirculationandWaves(KLOCAW),ChineseAcademyofSciences 4.DepartmentofCivilEngineering,TexasA&MUniversity |
| 推荐引用方式 GB/T 7714 | He HL,Song JB,Patrick J. Lynett,et al. Determination of fractional energy loss of waves in nearshore waters using an improved high-order Boussinesq-type model. 2009. |
入库方式： OAI收割
来源：海洋研究所
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