Hydraulic Jumps on Adverse Slope in Two Cases of Rough and Smooth Bed

One of the most frequently encountered cases of rapid varied flow is the hydraulic jump. It occurswhen a supercritical flow has to change into subcritical flow. Nowadays jump study upon sloping beds,especially adverse slopes, is important because of the length of jump and the energy loss. In this research jumpstudy has been done upon four adverse slopes -0.00125, -0.0025, -0.00375 and -0.005 in two cases of roughand smooth bed. The results showed that the Sequent depth ratio and the length of jump upon smooth bed hasbeen more than rough bed for the same slopes and Froude numbers. Also comparison with percentage of theenergy loss, more energy loss has occurred upon rough bed than smooth bed.