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http://dx.doi.org/10.12652/Ksce.2012.32.6B.373

Development of Empirical Formula for Transverse Dispersion Coefficient Based on Theoretical Equation in River Bends  

Baek, Kyong Oh (국립한경대학교 토목공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.32, no.6B, 2012 , pp. 373-378 More about this Journal
Abstract
In this study, a new empirical equation for the transverse dispersion coefficient has been developed based on the theoretical background in river bends. The nonlinear least-square method was applied to determine regression coefficients of the equation. The estimated dispersion coefficients derived by the new equation were compared with observed transverse dispersion coefficients acquired from natural rivers and coefficients calculated by the other existing empirical equations. From a comparison of the existing transverse dispersion equations and the new proposed equation, it appears that the behavior of the existing formula in a relative sense is very much dependent on the friction factor and the river geometry. However, the new proposed equation does not vary widely according to variation of friction factor. Also, it was revealed that the equation proposed in this study becomes an asymptotic curve as the curvature effect increases.
Keywords
transverse dispersion coefficient; theoretical equation; empirical equation; friction factor; river bend;
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Times Cited By KSCI : 1  (Citation Analysis)
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