可冲刷坡面滚波数值模拟研究
NUMERICAL SIMULATION OF ROLL WAVES IN OVERLAND FLOW OVER MOVABLE BED
查看参考文献12篇
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文摘
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应用一维水沙耦合数学模型研究了可冲刷坡面上滚波的水动力学特性.模型的基本控制方程采用完整的、基于守恒定律的一维浅水动力学方程,运用能够捕捉激波和泥沙运动不连续性的WAF TVD二阶数值格式离散控制方程.通过复演定床滚波的运动特点,对模型进行了验证.可冲刷坡面的滚波数值模拟结果表明,床面形态对滚波水动力学特性有显著的影响. |
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其他语种文摘
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A numerical study on mobile bed hydraulics of roll waves with sediment transport and morphological evolution is presented. The governing equations of the model comprise the shallow water hydrodynamics equations closed with the Manning formulation for the boundary resistance. The second-order Total-Variation- Diminishing version of the Weighted-Average-Flux method, along with the HLLC approximate Reimann Solver, is used to solve the governing equations, which can properly capture shock waves and deal with irregular boundaries. Brock's laboratory experiments of roll waves in a fixed-bed channel are reproduced. Numerical simulations show the development and propagation of roll waves over mobile-bed. It is shown that the morphological evolution has a great effect on the roll waves' dynamic characteristics. |
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来源
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力学与实践
,2009,31(1):24-27,38 【扩展库】
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关键词
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滚波
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可冲刷坡面
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数值模拟
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地址
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1.
长江航道局, 湖北, 武汉, 430010
2.
武汉大学, 水资源与水电工程科学国家重点实验室, 湖北, 武汉, 430072
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中国科学院力学研究所, 北京, 100190
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-0879 |
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学科
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水利工程 |
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基金
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欧盟第六框架计划项目
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国家自然科学基金重点项目
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文献收藏号
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CSCD:3502884
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参考文献 共
12
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