Estimation of the Longitudinal Dispersion Coefficient Using the Velocity Profile in Natural Streams

Estimation of the Longitudinal Dispersion Coefficient Using the Velocity Profile in Natural Streams

In this study, a theoretical method for predicting the longitudinal dispersion coefficient is developed based on the transverse velocity distribution in natural streams. Equations of the transverse velocity profile for irregular cross sections of the natural streams are analyzed. Among the velocity...

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Veröffentlicht in:Journal of hydraulic engineering (New York, N.Y.) N.Y.), 2004-03, Vol.130 (3), p.227-236
Hauptverfasser: Seo, Il Won, Baek, Kyong Oh
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Buildings. Public works
Computation methods. Tables. Charts
Exact sciences and technology
Hydraulic constructions
River flow control. Flood control
Structural analysis. Stresses
TECHNICAL PAPERS
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Baek, Kyong Oh
description In this study, a theoretical method for predicting the longitudinal dispersion coefficient is developed based on the transverse velocity distribution in natural streams. Equations of the transverse velocity profile for irregular cross sections of the natural streams are analyzed. Among the velocity profile equations tested in this study, the beta distribution equation, which is a probability density function, is considered to be the most appropriate model for explaining the complex behavior of the transverse velocity structure of irregular natural streams. The new equation for the longitudinal dispersion coefficient that is based on the beta function for the transverse velocity profile is developed. A comparison of the proposed equation with existing equations and the observed longitudinal dispersion coefficient reveals that the proposed equation shows better agreement with the observed data compared to other existing equations.
doi_str_mv 10.1061/(ASCE)0733-9429(2004)130:3(227)
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source American Society of Civil Engineers:NESLI2:Journals:2014
subjects Applied sciences
Buildings. Public works
Computation methods. Tables. Charts
Exact sciences and technology
Hydraulic constructions
River flow control. Flood control
Structural analysis. Stresses
TECHNICAL PAPERS
title Estimation of the Longitudinal Dispersion Coefficient Using the Velocity Profile in Natural Streams
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