摘要
基于河口海岸水动力二维数值计算模拟,建立风暴潮与天文潮耦合作用的数值模型,通过多次台风引起的增水和综合潮位的模拟验证,证实该模型可适用于杭州湾海域,能够准确模拟强潮海湾内风暴潮和综合潮波的传播.应用该模型计算了秦山核电厂处可能最大热带气旋引起的增水,结果表明,过程最大增水随遭遇的天文潮位降低而增大,增幅可达85%,综合高潮位则随遭遇的潮位降低而下降;在平均海平面条件下最大增水比高潮位增水约大50%,也大于我国登陆最强的超强台风引起的增水.分析指出在强潮海区,基准洪水位组合中的可能最大风暴潮增水取发生在高潮位时的最大增水较合理.
Based on estuarine and coastal hydrodynamic two-dimensional numerical simulation,the numerical model coupling astronomical tide with storm surge is established,which is confirmed to be suitable for Hangzhou Bay by validation of surge and integrated tidal level due to several typhoons,and accurately simulate storm surge and integrated wave propagation in the bay with strong tide.The model is applied to calculate the surges caused by possible maximum tropical cyclone at Qinshan Nuclear Power Plant,and it is testified that the maximum surge increases and integrated high tidal level declines with the decreasing of encountered astronomical tidal level,and the increment of maximum surge can reach up to 85%.In the condition of average sea level,the maximum surge is 50%larger than that occurring at high astronomical tide,which is also larger than the value caused by most powerful super typhoon landing in China.Analytical results reveal that it is reasonable that maximum surge occurring at astronomical high tidal level should be used as the component of designed base flood level in the bay with strong tide.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2010年第5期735-741,共7页
Journal of Dalian University of Technology
基金
国家自然科学基金资助项目(50809062)
关键词
杭州湾
天文潮
风暴潮
耦合模式
Hangzhou Bay
astronomical tide
storm surge
coupled mode
