Discussion of “Volume-Conservative Nonlinear Flood Routing” by Roland K. Price

Abstract

intervals having the same width (Fig. 1). For Y ≥ 11 and each R range, Fig. 1 shows that Eq. (10) systematically overestimates the sequent depth ratio. Fig. 2 shows the comparison between the Y values measured by Bradley and Peterka (1957), characterized by 111;832 ≤ R ≤ 268;513, and Eq. (10). Although these Reynolds numbers are much higher than those characterizing the writers’ investigation, an appreciable low overestimation of Y is detected by Fig. 2 for the highest Y values. In conclusion, for the investigated experimental R range, the Reynolds number is not significant for estimating the sequent depth ratio. Anyway, among the available relationships for estimating the sequent depth ratio of a B–jump, Ohtsu and Yasuda’s (1990) approach showed the best agreement with the considered measurements. No measurements of air concentration were carried out in the writers’ investigation; therefore, no conclusion can be established on the effect of an aerated supercritical inflow. The writers agree with the discussers that further investigations will be required to determine the effect of the aerated inflow on the formation and characteristics of the Dand B-jumps. References