3D simulation of storm surge disaster based on scenario analysis

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• 作者：Xiaoling Wang 王晓猿/a> ; Xiaopei Sun 孙小氿/a> ; Shengli Zhang 张胜冿/a>…
• 关键词：simulation ; storm surge disaster ; scenario analysis ; risk degree ; 3D SST k ; ω turbulence model ; composite scenario
• 刊名：Transactions of Tianjin University
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：22
• 期：2
• 页码：110-120
• 全文大小：2,523 KB
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• 作者单位：Xiaoling Wang 王晓玲 (1)
  Xiaopei Sun 孙小沛 (1)
  Shengli Zhang 张胜利 (1)
  Ruirui Sun 孙蕊蕊 (1)
  Ruijin Li 李瑞金 (1)
  Zebiao Zhu 朱泽彪 (1)
  
  1. State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, 300072, China
  
• 刊物类别：Engineering
• 刊物主题：Chinese Library of Science
  
• 出版者：Tianjin University
• ISSN：1995-8196

文摘

The occurrence of storm surge disaster is often accompanied with floodplain, overflow, dike breach and other complex phenomena, while current studies on storm surge flooding are more concentrated on the 1D/2D numerical simulation of single disaster scenario (floodplain, overflow or dike breach), ignoring the composite effects of various phenomena. Therefore, considering the uncertainty in the disaster process of storm surge, scenario analysis was firstly proposed to identify the composite disaster scenario including multiple phenomena by analyzing key driving forces, building scenario matrix and deducing situation logic. Secondly, by combining the advantages of k-ω and k-ε models in the wall treatment, a shear stress transmission k-ω model coupled with VOF was proposed to simulate the 3D flood routing for storm surge disaster. Thirdly, risk degree was introduced to make the risk analysis of storm surge disaster. Finally, based on the scenario analysis, four scenarios with different storm surge intensity (100-year and 200-year frequency) were identified in Tianjin Binhai New Area. Then, 3D numerical simulation and risk map were made for the case.