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Numerical Model of storm surge and Inundation in Bohai Bay

Transactions of Tianjin University 2011年第1期17卷 57-61页

作者：李大鸣付庆军解以扬白玲 Key Laboratory of Harbor and Ocean Engineering of Ministry of Education of China School of Civil Engineering Tianjin University Department of Civil and Environmental Engineering University of Houston Institute of Tianjin Meteorological Bureau

A two-dimensional numerical model of extratropical storm surge and inundation in Bohai Bay was built based on the unsteady flow Navier-Stokes equations. The model included two sections, one was for the simulation of storm surge tidal level and the other for the simulation of storm surge inundation in the coastal area. While simulating the storm surge tidal level, the alternating direction implicit (ADI) method was applied to dispersing and solving 2D storm surge equations. In the simulation of storm surge inundation, the 2D unsteady flow equations were dispersed and solved using the structureless grids of finite volume method (FVM). A coupling calculation mode of the process of inundation and storm surge tidal level variation was proposed, therefore the storm surge inundation process and area could be calculated while simulating and forecasting the process of storm surge tidal setup. Furthermore, an extratropical storm surge and inundation in Bohai Bay were simulated using this numerical model. Simulation results are in good agreement with the measured data, which shows that this numerical model provides a new method of simulating and forecasting storm surge and inundation in Bohai Bay.

关键词： extratropical storm surge inundation ADI method structureless grid

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