| 洞庭湖泥沙淤积数值模拟模式 |
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| 引用本文： | 施勇,栾震宇,胡四一.洞庭湖泥沙淤积数值模拟模式[J].水科学进展,2006,17(2):246-251. |
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| 作者姓名： | 施勇 栾震宇 胡四一 |
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| 作者单位： | 1.河海大学, 江苏, 南京, 210098; |
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| 基金项目： | 中国科学院资助项目;中国科学院资助项目 |
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| 摘 要： | 在确保沙量守恒的非恒定流、非均匀沙的二维水沙数学模型的基础上,通过洞庭湖水沙输运和河床变形计算实践,比较了两种冲泻质与床沙质的转化模式,提出了包括冲泻质在内的泥沙淤积模式和水沙动边界计算模式.从洞庭湖泥沙输运和河床变形计算的结果看,洞庭湖泥沙淤积数值模式具有较好的稳定性和较高的模拟精度,说明所建湖泊泥沙模型的良好性能和具有推广运用的前景.
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| 关 键 词： | 无结构网格 有限控制体积法 泥沙输运 淤积模式 |
| 文章编号： | 1001-6791（2006）02-0246-06 |
| 收稿时间： | 2004-09-02 |
| 修稿时间： | 2005-05-10 |
Numerical model of sediment deposit for Dongting Lake |
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| SHI Yong,LUAN Zhen-yu,HU Si-yi.Numerical model of sediment deposit for Dongting Lake[J].Advances in Water Science,2006,17(2):246-251. |
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| Authors: | SHI Yong LUAN Zhen-yu HU Si-yi |
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| Institution: | 1.Hohai University, Nanjing 210098, China;2.Nanjing Hydraulic Research Institute, Nanjing 210029, China |
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| Abstract: | According to the sand conservation and the characteristics of flow and sediment transports of lake,a two-dimensional unsteady flow and nonuniform sediment model is established.The paper compares the two transformation modes of wash load and bed material load,by calculating flow and sediment transports and riverbed deformation of Dongting Lake.Based on the above,the modes of sediment deposit and moving water-and-sand boundary,especially for wash load,are put forward.The calculated results prove that the numberical mode of sediment deposit for the Dongting Lake possesses better sability and higher simulant precision.It is showed that the established deposited model for the lake has good performance and popularizing prospect. |
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| Keywords: | unstructured grids finite volume algorithm sediment transport deposited mode |
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