Predicting longitudinal dispersion coefficient in natural streams

被引：227

作者：

Seo, IW ^{[1
]}

Cheong, TS ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Civil Engn, Kwanak Gu, Seoul 151742, South Korea

来源：

JOURNAL OF HYDRAULIC ENGINEERING-ASCE | 1998年 / 124卷 / 01期

关键词：

D O I：

10.1061/(ASCE)0733-9429(1998)124:1(25)

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this study, previous empirical equations used to compute the dispersion coefficient are analyzed in order to evaluate their behavior in predicting dispersion characteristics in natural streams. A comparative analysis of previous theoretical and empirical equations is retorted. A new simplified method for predicting dispersion coefficients using hydraulic and geometric data that are easily obtained in natural streams is also developed. The one-step Huber method, which is one of the nonlinear multiregression methods, is applied to derive a new dispersion coefficient equation. This equation is proven to be superior in explaining dispersion characteristics of natural streams more precisely, as compared to existing equations.

引用

页码：25 / 32

页数：8

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