| 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 |
| 考虑河岸冲刷的弯曲河道水流及河床变形的数值模拟 |
| Numerical simulation of flow and bed deformation in meandering rivers |
| |
| DOI： |
| 中文关键词: 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 |
| 英文关键词: meandering river 2-D depth averaged flow and sediment model bank erosion model longitudinal and transverse bed deformation |
| 基金项目: |
|
| 摘要点击次数: 2898 |
| 全文下载次数: 106 |
| 中文摘要: |
| 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. |
| 英文摘要: |
| 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. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |