| Abstract: | Bagnold's empirical correlation is one of the most applicable bed load relationships in the literature. However, few drawbacks still exist in Bagnold's correlation. In this study, a modified Bagnold's formula was proposed and tested with both reliable laboratory and field data under a wide range of sediment and flow conditions. In general, it was found that the modified Bagnold's formula provided better results on the prediction of sediment transport rates for most of the conditions tested. The phenomenon of selective transport for different sediment sizes for both the unimodal and bimodal bed materials were also analyzed based on the reliable flume and river data. |
