| 摘要: |
| 本文是在LAGFD-WAM海浪模式方法基础上,根据破碎波统计理论给出了LAGFD耗散源函数形式。同时对LAGFD-WAM模式进行了改进并与WAM模式作了三种典型风场下的对比实验和实测结果检验,取得了较好的结果。 |
| 关键词: 耗散源函数 海浪数值模拟 破碎波统计 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助，4870271号 |
附件 |
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| DISSIPATION SOURCE FUNCTION AND IMPROVEMENT OF LAGFD-WAM NUMERICAL WAVE MODEL |
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Yuan Yeli, Hua Feng, Pan Zengdi, Sun Letao
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First Institute of Oceanography, SOA, Qingdao 266003
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| Abstract: |
| Based on the result of breaking wave statistics, this study derives a new theoretical breaking dissipation source function.
(For the equations please see the PDF file.)
and its more applicable formula,
(For the equations please see the PDF file.)
in which d1 = 1.32×10-4, d2 = 2.61.
This expression overcomes the flaw of other present third-generation numerical wave models, for it gives lower dissipation value for the high sea state condition.
Application of the above source function improves the LAGFD-WAM numerical wave model. Results show that, in high wind condition, the model gives higher wave height than those obtained by the WAM model, and in low and middle wind condition, two models ‘give similar results. In the simulation of an observed typhoon wave, the new model is a good improvement over the WAM model. |
| Key words: Dissipation source function, Numerical wave model, Breaking wave statistics |
