漫滩恒定明渠水流的三维数值模拟

槐文信; 陈文学; 童汉毅; 卓建民

漫滩恒定明渠水流的三维数值模拟

1.
武汉大学水利水电学院, 湖北, 武汉, 430072;
2.
中国水利水电科学研究院, 北京, 100038;
3.
深圳市治理深圳河办公室, 广东, 深圳, 518008

基金项目: 教育部骨干教师资助项目;广东省水利厅科研基金资助项目

详细信息

作者简介:
槐文信(1963- ),男,陕西乾县人,武汉大学教授、博士生导师,主要从事环境水力学方面的研究.

中图分类号: TV131.1
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- 文章访问数: 224
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出版历程
- 收稿日期: 2001-11-18
- 修回日期: 2002-01-14
- 刊出日期: 2003-01-24

3-D numerical simulation on overbank steady open channel flows in compound channels

1.
Dept. of River Engineering, Wuhan University, Wuhan 430072, China;
2.
China Institute of Water Resources and Hydropower Research, Beijing 100038, China;
3.
Shenzhen River Regulation Office, Shenzhen 518008, China

Funds: The project is supported by Foundation of University key Teacher of the Ministry of Education

摘要

摘要: 采用Naot-Rodi代数应力模型(N-R模型),结合非均匀交错网格下的混合有限分析法(HFAM)来计算漫滩水流的三维流动。为了得到稳定的收敛解,作了两点改进:其一为非均匀网格中数值离散的导数项二阶格式的引入;其二为复式断面分块耦合技术的采用。给出了漫滩水流主流速等值线、二次流的断面分布、垂线平均流速的横向分布以及主槽与全断面流量比随相对水深的变化规律。部分结果与实验资料的对比,表明NR模型和HFAM能较好地用于研究漫滩水流流速、流量和水位的关系。
- 漫滩 /
- 明渠水流 /
- 三维数值模拟
Abstract: The Naot-Rodi algebraic turbulence stress model (N-R model) and the hybrid finite analytic method with staged grid are used to predict the behavior of 3-D overbank flow.In order to get the stable convergence solutions,the two kind measures are taken.The first is to use the correctly derivative scheme in non-uniform grid.The second is to use the multi-block matching method.Numerical tests are carried out for an open channel flow with compound section.The detailed results of main velocity contours,second flow distribution in cross section,lateral velocity distribution for relative water depth with 0.46, depth variation of proportions of flow in channel and floodplams are compared with the experimental data.Some quite reasonable results are obtained.It can be shown that the N-R rmdel with hybridfinite analytic method can be used to predict the relationship between water level and discharges for overbank flow.
- overbank /
- open channel flow /
- 3-D numerical simulation

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参考文献(14)

[1]	Shiono K, Knight D W. Two dimensional analytical solution for a compound channel[A]. Proc 3rd. Iwasa Y, et al.International symposium on refined flow modelling and turbulence measurements[C]. Tokyo,Japan. 1988. 503-510.
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文章访问数: 224
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漫滩恒定明渠水流的三维数值模拟

作者简介: 槐文信(1963- ),男,陕西乾县人,武汉大学教授、博士生导师,主要从事环境水力学方面的研究.

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出版历程

3-D numerical simulation on overbank steady open channel flows in compound channels

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出版历程

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作者简介:
槐文信(1963- ),男,陕西乾县人,武汉大学教授、博士生导师,主要从事环境水力学方面的研究.