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flood evolution process
相关语句
  相似匹配句对
     The Flood
     洪水
短句来源
     On Flood
     论《洪水》
短句来源
     EVOLUTION AND REGULATION OF FLOOD CHANNELS IN ESTUARIES
     河口涨潮槽的演变及治理
短句来源
     Evolution of Lake Dongting and Its Flood Disasters
     洞庭湖的形成、演变与洪涝灾害
短句来源
     The Color Evolution
     色彩的进化发展
短句来源
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A mathematical model for simulating the flood evolution process caused by the instaneous complete or partial dam break is established using 2D shallow water equation for seeking solution to control water flow movement based on the implicit numerical format of MacCormack prediction correction technique.The mathematical model is used to numerically compute the water surface curves from supercritical flow to subcritical one or vice versa of the transition in a rectangular open channel; and the numerical...

A mathematical model for simulating the flood evolution process caused by the instaneous complete or partial dam break is established using 2D shallow water equation for seeking solution to control water flow movement based on the implicit numerical format of MacCormack prediction correction technique.The mathematical model is used to numerically compute the water surface curves from supercritical flow to subcritical one or vice versa of the transition in a rectangular open channel; and the numerical results are compared with the theoretical results. And this model is also used to predict the instantaneous and partial dam break in a rectangular open channel and the flood evalution process, and the simulation results are analyzed qualitatively. The comparison and the analysis indicate that this model is fairly effective for simulating dam break flood waves.

采用基于 Mac Cormack预测 -校正技术的隐式数值格式求解控制水流运动的二维浅水方程 ,建立了模拟大坝瞬间全溃或局部溃倒所致的洪水演进过程的数学模型。应用该模型对矩形明渠中缓、急流过渡的水面曲线进行了数值计算 ,并与理论解进行了比较 ;最后用该模型预测了矩形河道中大坝瞬间局部溃倒的洪水演进过程 ,并对模拟结果进行了定性分析。比较与分析结果表明 ,该模型对模拟溃坝洪水波很有效

The flood evolution process is simulated based on the Saint-Venant equation and the characteristics of the Weihe River valley. This simulation can provide decision-makers and managers with complete information about rain, water and project operation. A trial breakthrough has been made in the flood evolution simulation system. The results are useful to flood prevention.

以圣维南公式为基础,结合渭河流域的特点,实现洪水过程的直观演进,为防洪指挥决策人员和管理人员提供了雨、水、工情全面的信息支持,在洪水演进方面进行了一些突破性尝试,研究结果对汛期进行防洪抗洪有很大的参考价值。

 
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