Author(s): P. Singh; X. Tang; H. R. Rahimi
Linked Author(s): Xianqi Tang
Keywords: Symmetric compound channels; Zonal & overall discharge; Apparent shear
Abstract: Transverse exchange of momentum between the main channel and floodplain in a uniform asymmetric compound channel flow is taken into account for the prediction of zonal and overall discharge. The overall dynamic effect has been tried to incorporate in the discharge calculations in such a way that lowering the discharge capacity of the compound channel can be evaluated through the separate section of the compound channels. In this study, the proposed model can predict the zonal and overall discharge reasonably well for wide combinations of geometric and roughness variations in the datasets of asymmetric channels considered. Out of different models for interactive divided channel methods, this new apparent shear based model is found to outperform others and found to give least overall percentage error of 6.7.
Year: 2020