顺直河流横向紊动扩散系数

郑旭荣; 邓志强; 申继红

顺直河流横向紊动扩散系数

石河子大学水利建筑工程学院, 新疆, 石河子, 832003

详细信息

作者简介:
郑旭荣(1961- ),男,新疆石河子人,副教授,主要从事水工水力学方面的研究.

中图分类号: TV133
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- 文章访问数: 164
- HTML全文浏览量: 20
- PDF下载量: 583
出版历程
- 收稿日期: 2001-10-22
- 修回日期: 2002-03-19
- 刊出日期: 2002-11-24

Transverse turbulent dispersion coefficient in straight channel

Shihezi University, Shihezi 832003, China

摘要

摘要: 利用垂直紊动扩散系数及水利几何形态关系,借助于抛物线型断面形态方程,提出了顺直河道中局部水深沿横断面的分布,在此基础上确定了横向紊动扩散系数的断面分布及其平均值表达式,阐明了无量纲横向紊流扩散系数间的关系,计算的断面平均横向紊动扩散系数与138组试验资料吻合良好。比较结果表明,建立的顺直河道横向紊流扩散系数计算公式能给出与实测值最接近的预测值。与现有的其它横向紊流扩散系数计算公式相比,其公式在理论上更加合理,机理上更加清楚,并且具有最小的预测误差。
- 顺直河流 /
- 紊流扩散 /
- 预测
Abstract: Based on the relationship between the vertical turbulent dispersion coefficient and hydraulic geometric shape,the distribution of local water depth with transverse surface in straight channel is put forward. The distribution of transverse turbulent dispersion coefficient and it's expression of average value are determined. The cross-section averaged transverse turbulent dispersion coefficient is found to be in good agreement with the of experimental data of 138 sets. The transverse turbulent dispersion coefficient calculated by using the equation are close to the observed. It indicates that the equation is not only nxme reasonable and clear in terms of theory and mechanism but has also the lowest error than others.
- straight channel /
- turbulent diffusion /
- forecasting

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参考文献(15)

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文章访问数: 164
HTML全文浏览量: 20
PDF下载量: 583
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顺直河流横向紊动扩散系数

作者简介: 郑旭荣(1961- ),男,新疆石河子人,副教授,主要从事水工水力学方面的研究.

计量

出版历程

Transverse turbulent dispersion coefficient in straight channel

计量

出版历程

目录

作者简介:
郑旭荣(1961- ),男,新疆石河子人,副教授,主要从事水工水力学方面的研究.