| 黄河下游河床纵向与横向变形的数值模拟——Ⅰ二维混合模型的建立 |
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| 引用本文： | 夏军强,王光谦,吴保生.黄河下游河床纵向与横向变形的数值模拟——Ⅰ二维混合模型的建立[J].水科学进展,2003,14(4):389-395. |
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| 作者姓名： | 夏军强 王光谦 吴保生 |
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| 作者单位： | 清华大学水沙科学教育部重点实验室, 北京, 100084 |
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| 基金项目： | 国家重点基础研究发展规划(973)资助项目(G1999043607)~~ |
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| 摘 要： | 提出了黄河下游滩岸冲刷问题的严重性,评述了河床横向变形模拟技术和河床变形混合模型的研究现状,并指出现有模型不适用于黄河下游的河床变形计算.将平面二维水沙数学模型与粘性河岸冲刷模型结合,建立了河床变形的平面二维混合模型.采用多种改进措施后,该模型能同时模拟天然河道的纵向与横向变形,尤其适用于河床纵横向变化都十分剧烈的黄河下游.
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| 关 键 词： | 黄河下游 滩岸冲刷 河床变形 河岸冲刷模型 二维混合模型 |
| 文章编号： | 1001-6791(2003)04-389-07 |
| 收稿时间： | 2002-04-29 |
| 修稿时间： | 2002年4月29日 |
Numerical simulation for the longitudinal and lateral deformation of riverbed in the lower Yellow River,1, establishment of a 2-D composite model |
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| XIA Jun-qiang,WANG Guang-qian,WU Bao-sheng.Numerical simulation for the longitudinal and lateral deformation of riverbed in the lower Yellow River,1, establishment of a 2-D composite model[J].Advances in Water Science,2003,14(4):389-395. |
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| Authors: | XIA Jun-qiang WANG Guang-qian WU Bao-sheng |
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| Affiliation: | Key Labor atory for Water and Sediment Sciences of Education Ministry, Tsinghua University, Beijing 100084, China |
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| Abstract: | This paper discusses the seriousness of bank erosion phenomena in the lower Yellow River,and evaluates some current numerical models for simulating the longitudinal and lateral deformations of riverbed.A conclusion is drawn that they are not applicable to simulate the full bed deformation process in the lower Yellow River Finally,a new 2-D composite model consisting of a 2-D-flow sediment mathematical submodel and a riverbank-erosion submodel is established.Through using all kinds of enhanced measures,this model can be used to simulatre both longitudinal and lateral deformations of riverbed in natural rivers,especially in the lower Yellow River. |
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| Keywords: | the lower Yellow River bank erosion riverbed deformation bank erosion model 2-D composite model |
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