On uniform formula for bedload transport rate

Present bedload transport rate formulas, such as Einstein and Meyer-Peter formulas, failed to predict for high shear conditions. Experimentation and analysis demonstrated that mobile beds at high shear stress obey neither the smooth-boundary nor the rough-boundary law, but follow a different friction relation of their own. By deploying Guo´s logarithmic matching method, this paper develops a uniform formula for computing the bedload transport rate in all flow regimes. The formula represents well various experimental data sets ranging from the weak transport to high shear conditions.