| 二维溃坝波传播的数值模拟 |
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| 引用本文： | 邓俊杰,程正扬,包芸.二维溃坝波传播的数值模拟[J].中山大学学报(自然科学版),2008,47(Z2). |
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| 作者姓名： | 邓俊杰 程正扬 包芸 |
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| 作者单位： | 中山大学应用力学与工程系,广东,广州,510275 |
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| 摘 要： | 采用附加人工粘性的显式Maccormack格式求解二维浅水方程,并对人工粘性加上开关函数,建立了模拟大坝瞬间局部溃倒所致的洪水演进过程的数学模型。用该模型预测了矩形河道中堤坝瞬间局部溃倒后8 min的洪水演进过程,得出了水面线和流场分布,并对溃坝洪峰到达时间和最大淹没水位的沿程分布作了分析。
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| 关 键 词： | 二维流场 溃坝 溃坝波 |
Numerical Simulation of Two-Dimensional Dam-break Flood Wave |
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| DENG Jun-jie,CHENG Zheng-yang,BAO Yun.Numerical Simulation of Two-Dimensional Dam-break Flood Wave[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2008,47(Z2). |
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| Authors: | DENG Jun-jie CHENG Zheng-yang BAO Yun |
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| Abstract: | The explicit Maccormack scheme with additional artificial viscosity is used to calculate the two-dimensional shallow water equations.With the switching function,the mathematical model is established to simulate the floods evolution for instantaneous local dam-break. The model is used to forecast the process of the flood evolution within 8 minutes since the dam collapse in a rectangular river.Then we analyze the water level and distribution of the flow,including the flood arrival time and the highest flood level. |
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| Keywords: | two-dimensional flow field dam-breakl dam-break flood wave |
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