Generation Conditions of Hydraulic Jump in Bifurcated Channel with Supercritical Flow

Abstract

When supercritical flow rush into a bifurcated channel with different discharge ratio from its width ratio, a hydraulic jump is forced to occur under some conditions. This paper investigate these conditions. First, a valid condition for Bernoulli equation applied to before and after points of a bifurcation was derived and compared with experimental data with jumping states. The outer region of the condition was roughly corresponding to the generation condition of hydraulic jumps. Second, a condition for an entrance of bifurcated channel to provide for jump was obtained from the gradually varied flow equation with lateral inflow. The result shows that the condition satisfy the experimental data.