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张敏,米婕,赵振宇,朱冬琳,陈波.基于模型耦合的北部湾风暴潮增水与风浪模拟研究[J].广西科学,2019,26(6):655-662. [点击复制]
- ZHANG Min,MI Jie,ZHAO Zhenyu,ZHU Donglin,CHEN Bo.Study on the Coupled Numerical Simulation of Storm Surge and Wind Wave in Beibu Gulf[J].Guangxi Sciences,2019,26(6):655-662. [点击复制]
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| 基于模型耦合的北部湾风暴潮增水与风浪模拟研究 |
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张敏1,2, 米婕2, 赵振宇2, 朱冬琳1, 陈波1
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| (1.广西科学院, 广西北部湾海洋研究中心, 广西近海海洋环境科学重点实验室, 广西南宁 530007;2.上海师范大学环境与地理科学学院, 上海 200234) |
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| 摘要: |
| 台风风暴潮引发的增水和风浪效应是造成沿海低地灾害和损失的重要因素。本文设计了区域嵌套、波-流耦合的有限元数值模拟系统，对北部湾及附近海域风浪和增水过程进行有效模拟，精度达到应用要求。结果表明北部湾在台风影响下引起明显风浪和增水效应。台风中心风浪较小，仅1 m以内；而台风臂扫过海域风浪较大，可达9 m以上。最大增水海域出现在北部湾东侧靠近琼州海峡附近，可达2.5 m。风浪与增水叠加具有非线性效应，最大增水与最大风浪出现时间如与大潮高潮位相遇易形成超高水位，将对北部湾沿岸低地造成巨大淹没风险。本研究意在突破北部湾现有模型局限性，为进一步深化科学研究和工程应用提供基础数据。 |
| 关键词: 风暴潮增水 数值模拟 模型耦合 北部湾 |
| DOI：10.13656/j.cnki.gxkx.20191231.003 |
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| 基金项目:广西科学院广西近海海洋环境科学重点实验室开放基金项目（GXKLHY19-01）和国家自然科学基金项目（41701001）资助。 |
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| Study on the Coupled Numerical Simulation of Storm Surge and Wind Wave in Beibu Gulf |
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ZHANG Min1,2, MI Jie2, ZHAO Zhenyu2, ZHU Donglin1, CHEN Bo1
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| (1.Guangxi Key Laboratory of Marine Environmental Science, Guangxi Beibu Gulf Marine Research Center, Guangxi Academy of Sciences, Nanning, Guangxi, 530007, China;2.School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai, 200234, China) |
| Abstract: |
| Storm surges and wind waves induced by typhoon are the two important factors causing flooding disaster and economic loss in the coastal lowlands. In this paper, a regional nesting and wave-current coupling finite element numerical modeling system was designed to effectively simulate the storm surges and wind waves in Beibu Gulf and surrounding water, and the accuracy meets requirements of the application. The results show that wind waves and storm surges has been significantly increased under the influence of typhoon in Beibu Gulf. The wind wave in the center of typhoon is small, only within 1 m, while the wind wave of the typhoon arm sweeping over the sea is larger, up to 9 m. The largest storm surge area appears on the eastern side of Beibu Gulf near Qiongzhou Strait, which can reach 2.5 m. The superposition of wind wave and storm surge has a nonlinear effect. If the maximum increase of storm surge coincides with the peak wind waves, a super high water level will appear when they meet with the high tide level, which will cause a great risk of flooding to the lowlands along Beibu Gulf. The purpose of this paper is to break through the limitations of existing models in Beibu Gulf and provide basic data for further deepening scientific research and engineering applications. |
| Key words: storm surge numerical modelling model coupling Beibu Gulf |
