Improvement of different source function expressions in SWAN model for the Bohai Sea
文献类型：期刊论文
| 作者 | Yin, BS; Yang, DZ; Sha, RN; Cheng, MH |
| 刊名 | PROGRESS IN NATURAL SCIENCE
 |
| 出版日期 | 2005-08-01 |
| 卷号 | 15期号:8页码:720-724 |
| 关键词 | Waves Swan Model Wave Growth Source Function New Proportionality Coefficient Formula |
| ISSN号 | 1002-0071 |
| 文献子类 | Article |
| 英文摘要 | The simulating wave nearshore (SWAN) wave model has been widely used in coastal areas, lakes and estuaries. However, we found a poor agreement between modeling results and measurements in analyzing the chosen four typical cases when we used the default parameters of the source function formulas of the SWAN to make wave simulation for the Bohai Sea. Also, it was found that at the same wind process the simulated results of two wind generation expressions (Komen, Janssen) demonstrated a large difference. Further study showed that the proportionality coefficient alpha in linear growth term of wave growth source function plays an unperceived role in the process of wave development. Based on experiments and analysis, we thought that the coefficient alpha should change rather than be a constant. Therefore, the coefficient alpha changing with the variation of friction velocity U (*) was introduced into the linear growth term of wave growth source function. Four weather processes were adopted to validate the improvement in the linear growth term. The results from the improved coefficient alpha agree much better with the measurements than those from the default constant coefficient alpha. Furthermore, the large differences of results between Komen wind generation expression and Janssen wind generation expression were eliminated. We also experimented with the four weather processes to test the new white-capping mechanisms based on the cumulative steepness method. It was found that the parameters of the new white-capping mechanisms are not suitable for the Bohai Sea, but Alkyon's white-capping mechanisms can be applicable to the Bohai Sea after amendments, demonstrating that this improvement of parameter alpha can improve the simulated results of the Bohai Sea.; The simulating wave nearshore (SWAN) wave model has been widely used in coastal areas, lakes and estuaries. However, we found a poor agreement between modeling results and measurements in analyzing the chosen four typical cases when we used the default parameters of the source function formulas of the SWAN to make wave simulation for the Bohai Sea. Also, it was found that at the same wind process the simulated results of two wind generation expressions (Komen, Janssen) demonstrated a large difference. Further study showed that the proportionality coefficient alpha in linear growth term of wave growth source function plays an unperceived role in the process of wave development. Based on experiments and analysis, we thought that the coefficient alpha should change rather than be a constant. Therefore, the coefficient alpha changing with the variation of friction velocity U (*) was introduced into the linear growth term of wave growth source function. Four weather processes were adopted to validate the improvement in the linear growth term. The results from the improved coefficient alpha agree much better with the measurements than those from the default constant coefficient alpha. Furthermore, the large differences of results between Komen wind generation expression and Janssen wind generation expression were eliminated. We also experimented with the four weather processes to test the new white-capping mechanisms based on the cumulative steepness method. It was found that the parameters of the new white-capping mechanisms are not suitable for the Bohai Sea, but Alkyon's white-capping mechanisms can be applicable to the Bohai Sea after amendments, demonstrating that this improvement of parameter alpha can improve the simulated results of the Bohai Sea. |
| 学科主题 | Multidisciplinary Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000232611700009 |
| 公开日期 | 2010-12-22 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/2465]  |
| 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, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yin, BS,Yang, DZ,Sha, RN,et al. Improvement of different source function expressions in SWAN model for the Bohai Sea[J]. PROGRESS IN NATURAL SCIENCE,2005,15(8):720-724. |
| APA | Yin, BS,Yang, DZ,Sha, RN,&Cheng, MH.(2005).Improvement of different source function expressions in SWAN model for the Bohai Sea.PROGRESS IN NATURAL SCIENCE,15(8),720-724. |
| MLA | Yin, BS,et al."Improvement of different source function expressions in SWAN model for the Bohai Sea".PROGRESS IN NATURAL SCIENCE 15.8(2005):720-724. |
入库方式： OAI收割
来源：海洋研究所
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