| 分汊河道分沙的三维数值模型 | |
| 李琳琳 ; 余锡平 ; LI Linlin ; YU Xiping | |
| 2010-06-10 ; 2010-06-10 | |
| 关键词 | 分汊河道 分沙比 悬移质 带旋流修正的k-ε紊流模型 混相流模型 branching river sediment diversion ratio suspended sediment realizable k-ε eddy viscosity model mixture model TV142.3 |
| 其他题名 | 3-D numerical model for diversion of sediment into the branch of a river |
| 中文摘要 | 为分析汊道口门处水流结构对悬移质分沙的影响,采用带旋流修正的k-ε双方程紊流模型,对分汊河道分流口门处的三维水流结构进行精确计算,并在此基础上,采用可考虑相间滑移的混相流模型对不同形态分汊河道的悬移质分沙进行计算。计算结果显示了分汊口门处表底层水流的差异及横向环流的存在等现象,与前人的实验值吻合良好。计算结果表明,分汊口门处的环流强弱和悬移质垂线分布是影响汊道分沙比与分流比关系的主要因素。; The flow structure near the branching point of a river affects sediment diversion into the branch.The realizable k-ε eddy viscosity model was used to compute the three-dimensional flow structure near a branching point in a river.The mixture model uses a slip velocity to compute the suspended sediment transport for various conditions.The flow differences between the surface layer and the bottom layer are clearly demonstrated.The numerical results,which agree well with available experimental data,show that the circulation formed near of the branch entrance and the vertical distribution of the sediment play important roles in diverting sediment into the branch. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/59545]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 李琳琳,余锡平,LI Linlin,等. 分汊河道分沙的三维数值模型[J],2010, 2010. |
| APA | 李琳琳,余锡平,LI Linlin,&YU Xiping.(2010).分汊河道分沙的三维数值模型.. |
| MLA | 李琳琳,et al."分汊河道分沙的三维数值模型".(2010). |
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