Experimental Analysis on the Use of Counterflow Jets as a System for the Stabilization of the Spatial Hydraulic Jump

This study presents an investigation on the use of submerged counterflow jets as a means for stabilizing spatial hydraulic jump occurring in abruptly expanding channels. The characteristics flow downstream from stilling basin and main parameters influencing effectiveness device improving uniformity reducing scouring potential are examined laboratory tests, under several geometric configurations boundary conditions. position within jet density (i.e., number orifices issuing jets) were found to be important performance device. Overall, results indicate that this dissipation system has promising capabilities forcing transition supercritical subcritical flow, by significantly shortening protection length needed limit phenomena instability associated with jumps.