| 考虑河岸冲刷的弯曲河道水流及河床变形的数值模拟 |
| |
| 引用本文： | 夏军强,王光谦.考虑河岸冲刷的弯曲河道水流及河床变形的数值模拟[J].水利学报,2002,33(6):0060-0067. |
| |
| 作者姓名： | 夏军强 王光谦 |
| |
| 作者单位： | 清华大学水沙科学教育部重点实验室,北京,100084 |
| |
| 基金项目： | 国家自然科学基金和水利部联合资助项目 (编号 :5 9890 2 0 0 ) |
| |
| 摘 要： | 本文将正交曲线坐标系下的平面二维水沙数学模型和粘性河岸的冲刷模型结合，用于模拟弯道内的水流运动、悬移质泥沙的输移、河床的纵向及横向变形.用水槽试验资料验证了本文提出的水流模型，结果表明流速分布、水位等计算结果与实测值相当符合.应用建立的水沙数学模型以及河岸冲刷模型，模拟了一概化弯道在持续清水冲刷下的主流线位置、断面形态、主槽比降的变化过程，模拟结果符合弯道演变规律.
|
| 关 键 词： | 弯曲河道 平面二维水沙数学模型 河岸冲刷模型 河床纵向及横向变形 |
| 文章编号： | 0559-9350(2002)06-0060-07 |
| 修稿时间： | 2001年3月7日 |
Numerical simulation of flow and bed deformation in meandering rivers |
| |
| XIA Jun-qiang,WANG Guang-qian.Numerical simulation of flow and bed deformation in meandering rivers[J].Journal of Hydraulic Engineering,2002,33(6):0060-0067. |
| |
| Authors: | XIA Jun-qiang WANG Guang-qian |
| |
| Affiliation: | 1.Tsinghua Univeristy |
| |
| Abstract: | A 2-D depth averaged mathematical model with curvilinear coordinates considering the erosion of riverbank is established to study the water flow, transportation of suspended sediment and deformation of riverbed in longitudinal and transverse directions in meandering rivers. The calculated velocity distribution and water level are in good agreement with the model test data. The model is applied to forecast the variation process of main stream direction, cross section and channel slope of a conceptualized curved river under the erosion of clear water. |
| |
| Keywords: | meandering river 2-D depth averaged flow and sediment model bank erosion model longitudinal and transverse bed deformation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《水利学报》浏览原始摘要信息 |
|
点击此处可从《水利学报》下载全文 |
