Two dimensional analytical solution for overbank flows with interaction between the main channel and floodplain

Yang Zhong-Hua; Gaowei

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Two dimensional analytical solution for overbank flows with interaction between the main channel and floodplain

更新时间：2023-11-28

- Two dimensional analytical solution for overbank flows with interaction between the main channel and floodplain
- Advanced Engineering Sciences Vol. 41, Issue 5, Pages: 42-46(2009)
- 作者机构：
  
  1. 武汉大学
  2. 武汉大学水资源与水电工程科学国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2009，
  
  Published Online：3 July 2009，
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杨中华,高伟.考虑滩槽相互作用的漫滩水流二维解析解[J].工程科学与技术,2009,41(5):42-46.

Yang Zhong-Hua, Gaowei. Two dimensional analytical solution for overbank flows with interaction between the main channel and floodplain. [J]. Advanced Engineering Sciences 41(5):42-46(2009)
杨中华,高伟.考虑滩槽相互作用的漫滩水流二维解析解[J].工程科学与技术,2009,41(5):42-46. DOI：

Yang Zhong-Hua, Gaowei. Two dimensional analytical solution for overbank flows with interaction between the main channel and floodplain. [J]. Advanced Engineering Sciences 41(5):42-46(2009) DOI：

摘要

中文摘要: 本文研究复式河道断面的流速与切应力分布问题，将纵向动量方程沿水深方向积分，得到流速分布的解析解。考虑断面二次流的影响，在积分过程中采用了三种不同的积分假定，将水深函数代入三个积分方程中求得滩槽连接处水深变化区域内的流速计算公式。应用FCF的实验资料对模型进行验证，发现采用合理的K值比直接采用SKM方法计算能更好的模拟流速和切应力分布；应用FCF的实验资料对三种不同积分假定下的水深变化区域流速和切应力计算公式进行比选，得到了与实测值最为吻合的计算公式。

Abstract

Abstract:A review was made of the methods for determination of the longitudinal dispersion coefficient in natural rivers

especially in river bends

with emphasis placed on the current situation and development trends

i.e. the theoretical formulas

the tracer experiment and the empirical formulas. The applicability of the theoretical formula based on the velocity profile and its further development by researchers at home and abroad were discussed; some new methods for calculation of the longitudinal dispersion coefficient by means of tracer experiment data

and their features were analyzed; some typical empirical formulas were summarized

and some problems which need further research are proposed.

关键词

复式河道漫滩水流流速切应力

Keywords

compound channelsoverbank flowsvelocitybed shear

references

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张明亮,沈永明,吴修广.复式断面三维漫滩水流的数值模拟[J].水力发电学报,2006(5)

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Sonia Castanedo ；Raul Medina ；Fernando J. Mendez,Models for the Turbulent Diffusion Terms of Shallow Water Equations,Journal of Hydraulic Engineering ,2005, 131(3).

Ackers P,Stage-discharge functions for two-stage channels:the impact of new research,Journal of the Institution of Water and Environmental Management

Ervine D A;Babaeyan-Koopaei K;Sellin R H J,Two-dimensional solution for straight and meandering overbank flows,Journal of Hydraulic Engineering,2000.

Kejun Yang ；Shuyou Cao ；Donald W. Knight,Flow Patterns in Compound Channels with Vegetated Floodplains,Journal of Hydraulic Engineering ,2007, 133(2).

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