Hydraulic Jump Stilling Basins

One of the most extensively investigated phenomena in hydraulic engineering—both theoretically as well as experimentally—is the hydraulic jump. A properly designed hydraulic jump stilling basin can ensure 60–70% dissipation of energy in the basin itself. The most serious problem with the hydraulic jump dissipator, however, is more of structural strength rather than hydraulic efficiency. Hydraulic jumps can be classified according to the geometrical form, pre-jump Froude number of the flow relating it to the energy dissipation efficiency, or as a free, forced, or submerged jump. The study of turbulence structure of hydraulic jump is important in understanding the origin and mechanism of damaging forces such as uplift, vibration, cavitation, and other forms of hydrodynamic loading. The most serious problem with the hydraulic jump dissipator is more of structural strength rather than hydraulic efficiency. The turbulence in a hydraulic jump imposes forces against divide walls, sidewalls, and appurtenances, particularly baffle piers.