Project supported by the National Natural Science Foundation of China(Grant Nos.51579014,51339001 and 91647117);the National Key Research and Development of China(Grant No.2016YFC0402301-01)
The flow resistance in rivers is an old and partly unsolved problem. In this study, the bed surface fractal dimension(BSFD) is used to describe the bed morphology, and combined with the bed roughness, a general mode...