=+29. The authors of “Experimental and Numerical Investigation of Bed-Load Transport Under Unsteady Flows” (J. Hydraul. Engr., 2011: 1276–1282)

simulated sediment yield of a gravel bed load under varying rates of water flow. The researchers wanted to mathematically model the behavior of sediment transport under such conditions and proposed a new model parameter, Pgt, that characterizes the unsteadiness of the water flow. Eleven simulation runs were conducted in the laboratory. For each