| 垂向二维非恒定流及悬浮物分布模型研究 |
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| 引用本文： | 冯小香,张小峰,崔占峰.垂向二维非恒定流及悬浮物分布模型研究[J].水科学进展,2006,17(4):518-524. |
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| 作者姓名： | 冯小香 张小峰 崔占峰 |
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| 作者单位： | 1.武汉大学水资源与水电工程科学国家重点实验室, 湖北, 武汉, 430072; |
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| 基金项目： | 高等学校博士学科点专项科研项目 |
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| 摘 要： | 采用σ坐标变换拟合复杂边界、VOF方法追踪自由水面变化和SIMPLE算法求解控制方程等建立垂向二维非恒定水流及悬浮物分布数学模型。该模型适用于变量在横向上分布基本均匀的水流流动特性及悬浮物扩散迁移过程的模拟,与刚盖假定或静水压强假定等条件下建立的垂向二维数学模型相比更符合实际情况。分别对概化水库水流结构的沿程变化、明渠均匀流及带有槽沟的明渠非均匀流及悬浮物浓度分布进行了模拟,计算结果与实测值符合良好。模型的应用可为河道或水库的洪水调度、水污染控制、取水工程优化等提供参考。
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| 关 键 词： | 垂向二维模型 σ坐标变换 自由水面 悬浮物 非恒定流 |
| 文章编号： | 1001-6791（2006）04-0518-07 |
| 收稿时间： | 2005-02-01 |
| 修稿时间： | 2005-04-12 |
Numerical modeling of vertical 2D unsteady flow and suspended material distribution |
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| FENG Xiao-xiang,ZHANG Xiao-feng,CUI Zhan-feng.Numerical modeling of vertical 2D unsteady flow and suspended material distribution[J].Advances in Water Science,2006,17(4):518-524. |
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| Authors: | FENG Xiao-xiang ZHANG Xiao-feng CUI Zhan-feng |
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| Affiliation: | 1.State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China;2.Tianjin Research Institute of Waterway Transport Engineering, Tianjin 300456, China;3.Yangtze River Scientific Research Institute, Wuhan 430010, China |
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| Abstract: | Based on the a-coordinate transformation to fit the complicated boundary, the VOF to track the moving free surface and the SIMPLE algorithm, this paper proposes a vertical 2D unsteady flow and suspended material distribution model. It is efficiency, and able to simulate flow characteristic and transportation process of suspended material in reservoirs and rivers for the comparative uniform of the variation distribution in lateral direction. And it has an advantage over the other models with hydrostatic pressure or rigid-lid assumption. By the numerical verification of the schematic reservoir, the open-channel and trench, the model proves its reliability and validity in simulating vertical 2D flow and the concentration distribution of the suspended material. It can also give a scientific reference to flood dispatching, water pollution control and the optimization of the water diversion project, etc. |
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| Keywords: | vertical 2D model a-coordinate transformation free surface suspended material unsteady flow |
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