| 二维明渠非恒定流的格子Boltzmann模拟 |
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| 引用本文： | 程永光,索丽生.二维明渠非恒定流的格子Boltzmann模拟[J].水科学进展,2003,14(1):9-14. |
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| 作者姓名： | 程永光 索丽生 |
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| 作者单位： | 1.武汉大学水利水电学院, 湖北, 武汉, 430072; |
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| 基金项目： | 国家自然科学基金资助项目(50009007) |
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| 摘 要： | 根据二维浅水波方程的特点,应用由格子Boltzmann方程展开的多尺度方程,建立了一个能模拟二维明渠非恒定流的格子Boltzmann模型。通过对一维溃坝波和二维圆形溃坝波的模拟分析,验证了该模型的有效性。以某水电站尾水渠为例,模拟分析了由机组甩负荷和增负荷引起的水位波动规律,为尾水渠的设计提供了依据。
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| 关 键 词： | 格子Boltzmann方法 二维明渠非恒定流 二维浅水波方程 尾水明渠 |
| 文章编号： | 1001-6791(2003)01-009-06 |
| 收稿时间： | 2001-11-28 |
2-D open channel flow simulations by the lattice Boltzmann model |
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| CHENG Yong-guang,SUO Li-sheng.2-D open channel flow simulations by the lattice Boltzmann model[J].Advances in Water Science,2003,14(1):9-14. |
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| Authors: | CHENG Yong-guang SUO Li-sheng |
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| Affiliation: | 1.Wuhan University, Wuhan 430072, China;2.Hohai University, Nanjing 210098, China |
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| Abstract: | A special lattice Boltzmann rmdel for simulating 2-D unsteady open channel flows is built by combining the Chapman-Enskog-Expansion derived multi-scale equations that approximate the form of shallow water equations.To verify the model typical 1-D and 2-D dam breaks are simulated,and the results show agreement with analytical method and other models.As an actual example,the unsteady flows in the tailrace channel of a hydropower plant are calculated. |
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| Keywords: | lattice Boltzmann method 2-D unsteady open channel flow 2-D shallow water equation tailrace channel |
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