| 平面二维河床粗化层的数值模拟 |
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| 引用本文： | 余明辉,杨国录,张小峰,金峰.平面二维河床粗化层的数值模拟[J].武汉大学学报(工学版),2000,33(6). |
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| 作者姓名： | 余明辉 杨国录 张小峰 金峰 |
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| 作者单位： | 1. 武汉水利电力大学,水利水电工程学院,湖北,武汉,430072
2. 长江科学院,湖北,武汉,430010 |
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| 摘 要： | 基于三角形网格划分 ,应用破开算子原理 ,建立了平面二维非均匀沙水流泥沙数学模型 ,并使用了平面二维非均匀沙水流挟沙力公式 .着重对河床冲刷过程中悬移质含沙量、河床变形和床沙级配等沿时空变化特性进行了计算分析 ,模拟了概化河道中床沙粗化层的形成过程 .数值实验表明 ,该方法边界符合良好 ,计算量小 ,能准确地模拟出河床冲刷过程中水沙的变化规律
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| 关 键 词： | 破开算子 有限体积法 非均匀沙 粗化层 |
Horizontal 2-D mathematical model of bed armoring layer |
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| YU Ming-hui,YANG Guo-lu,ZHANG Xiao-feng,JIN Feng.Horizontal 2-D mathematical model of bed armoring layer[J].Engineering Journal of Wuhan University,2000,33(6). |
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| Authors: | YU Ming-hui YANG Guo-lu ZHANG Xiao-feng JIN Feng |
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| Abstract: | Based on triangle mesh and splitting method, a horizontal 2_D mathematical model for uneven sediment is established by using a formula for uneven sediment carrying capacity of the flow. The calculation given by the mathematical model can be used to emphasize on sediment quantity, river_bed deformation and bed material grading and can be used to simulate the form course of bed armoring layer on generalization river course. The numerical experiments show that the method adapts to calculating flow and sediment transportation during river_bed erosion in the complex boundary by using small calculating quantity. |
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| Keywords: | splitting method finite volume uneven sediment armor la |
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