Determination of fractional energy loss of waves in nearshore waters using an improved high-order Boussinesq-type model
文献类型：期刊论文
| 作者 | He Hailun1,2,4; Song Jinbao1,2; Lynett, Patrick J.3; Li Shuang1,2,4 |
| 刊名 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 出版日期 | 2009-08-01 |
| 卷号 | 27期号:3页码:621-629 |
| ISSN号 | 0254-4059 |
| 关键词 | Breaking Waves Boussinesq-type Equations Nearshore Wave Modeling Fractional Energy Loss |
| DOI | 10.1007/s00343-009-9154-7 |
| 文献子类 | Article |
| 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.; 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. |
| 学科主题 | Limnology ; Oceanography |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000270742000030 |
| 公开日期 | 2010-12-22 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/2379]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, KLOCAW, Qingdao 266071, Peoples R China 3.Texas A&M Univ, Dept Civil Engn, College Stn, TX 77843 USA 4.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | He Hailun,Song Jinbao,Lynett, Patrick J.,et al. Determination of fractional energy loss of waves in nearshore waters using an improved high-order Boussinesq-type model[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2009,27(3):621-629. |
| APA | He Hailun,Song Jinbao,Lynett, Patrick J.,&Li Shuang.(2009).Determination of fractional energy loss of waves in nearshore waters using an improved high-order Boussinesq-type model.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,27(3),621-629. |
| MLA | He Hailun,et al."Determination of fractional energy loss of waves in nearshore waters using an improved high-order Boussinesq-type model".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 27.3(2009):621-629. |
入库方式： OAI收割
来源：海洋研究所
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