Open Science Research Excellence

Rajeev Ranjan Sahay

Publications

1

Publications

1
9996951
Predicting Dispersion Coefficient in Free-Flowing Zones of Rivers by Genetic Programming
Abstract:

Transient storage zones along the flow paths of rivers have great influence on the dispersion of pollutants that are either accidentally or otherwise led into them. The speed with which these pollution clouds get transported and dispersed downstream is, to a large extent, explained by the longitudinal dispersion coefficients in the free-flowing zones of rivers (Kf). In the present work, a new empirical expression for Kf has been derived employing genetic programming (GP) on published dispersion data. The proposed expression uses few hydraulic and geometric characteristics of a river that are readily available to field engineers. Based on various performance indices, the proposed expression is found superior to other existing expression for Kf.

Keywords:
Dispersion, parameter estimation, rivers, transient pollutant.