| 低浓度固液两相流中泥沙垂直分布的摄动理论解释 |
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| 引用本文： | 倪晋仁,周东火. 低浓度固液两相流中泥沙垂直分布的摄动理论解释[J]. 水利学报, 1999, 0(5): 1-5 |
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| 作者姓名： | 倪晋仁 周东火 |
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| 作者单位： | 1. 北京大学城市与环境学系,北京,100871
2. 美国KEANE有限公司 |
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| 摘 要： | 本文从低浓度两相流中固相和液相的相互作用着眼，从基本的动量方程和连续方程出发，将悬浮固体颗粒的存在视为对相同流动条件下清水紊流的摄动，引入摄动分析的理论，并通过动量方程直接得出了悬移质泥沙浓度分布规律，从而对作者和王光谦提出的悬移质泥沙分布的统一公式给出了理论解释
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| 关 键 词： | 低浓度，固液两相流，摄动理论 |
Interpretation of vertical sediment distribution in terms of perturbation theory |
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| Ni Jinren,Zhou Donghuo. Interpretation of vertical sediment distribution in terms of perturbation theory[J]. Journal of Hydraulic Engineering, 1999, 0(5): 1-5 |
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| Authors: | Ni Jinren Zhou Donghuo |
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| Abstract: | Within the framework of two phase flow theory,an analysis is carried out based on the momentum and continuity equations of fluid mechanics.Corresponding to the physical process of the interaction of the solid and fluid phases,a perturbation analysis is systematically developed.Consequently,the generalized suspended sediment concentration profile suggested by Ni (1989) is derived directly from the basic governing equations.The obtained concentration profile has wider range of application than the well known Rouse formula. |
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| Keywords: | sediment soild liquid two phase flow perturbation theory. |
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