南海台风浪的数值计算方案研究  

Calculation scheme studies of typhoon waves in the South China Sea

作　　者：沈旭伟 张洋 赵红军[2] 陈国平[2] SHEN Xu-wei;ZHANG Yang;ZHAO Hong-jun;CHEN Guo-ping(Jiangsu Power Design Institute Co.,Ltd.,of China Energy Engineering Group,Nanjing 211102,China;Key Laboratory of Coastal Disaster and Defence Ministry of Education,Hohai University,Nanjing 210098,China)

机构地区：[1]中国能源建设集团江苏省电力设计院有限公司,南京211102 [2]河海大学海岸灾害与防护教育部重点实验室,南京210098

出　　处：《水道港口》2018年第4期422-426,457,共6页Journal of Waterway and Harbor

摘　　要：基于第三代海浪模型SWAN,选取3种路径的典型个例台风,对南海台风浪的多种计算方案开展了较为详细的研究。有以下结论:首先,计算值与实测值符合良好,表明SWAN模型能对南海台风浪计算有较好的模拟效果。其次,通过是否考虑第一岛链外波浪影响的两种方案比较发现,第一岛链外的波浪对南海台风浪影响较小,可以采用100°E^125°E、0°~25°N的计算域范围。最后,通过多组次不同计算分辨率方案对比发现,计算分辨率越高,计算值和实测值的平均偏差越小,相关系数越大,模拟效果越好。从计算效果和计算效率的角度考虑,可以采用6'的计算分辨率对南海大部分开阔海域进行台风浪数值计算。Based on the third generation wave model SWAN, typical typhoons of three different routes were selected to have a detailed study of several calculation schemes of typhoon waves in the South China Sea. Conclusions are as follows： First, calculated values match well with measured values, which indicates that SWAN has a good ability of calculating typhoon waves in the South China Sea. Second, through the comparison of two schemes whether waves outside the first island chain are considered, it shows that waves outside the first island chain has little influence on typhoon waves in the South China Sea. So calculation range 100°E -125°E, 0°-25° N is recommended. Finally, through several groups of different resolutions, it shows that the higher the calculation resolution is, the smaller the average deviation is, and the bigger the correlation coefficient is, and the better the simulation result is. In consideration of calculation effect and calculation efficiency, the calculation resolution 6＇ can be applied to most open alias in the South China Sea for numerical calculation of typhoon waves.

关 键 词：SWAN 南海 台风浪 计算域范围 计算分辨率 

分 类 号：P731[天文地球—海洋科学]