University of Tehran Press Iranian Journal of Soil and Water Research 2008-479X 39 1 2010 02 20 Control of Hydrauli Jump through Sill in a Trapezoidal Channel Control of Hydrauli Jump through Sill in a Trapezoidal Channel 19930 FA Majid Khorshidi Mohammad Hosein Omid 0000-0003-2616-4903 Abdolhosein Hoorfar Journal Article The control of hydraulic jump through thin-crested sills in a trapezoidal channel was studied theoretically as well as experimentally. The experiments were conducted in a specially designed stilling basin for 1:1 side slope. The results show that for a given side slope, end sill increases the stability of the jump within the stilling basin. It also causes a 13-15 percent reduction in the length of jump and negligible changes of the sequent depth as compared with the jumps occurring in a trapezoidal section with no sill. Finally, a relationship has been proposed for the design of the height and for the location of the sill to control the jump for a wide range of conditions. The control of hydraulic jump through thin-crested sills in a trapezoidal channel was studied theoretically as well as experimentally. The experiments were conducted in a specially designed stilling basin for 1:1 side slope. The results show that for a given side slope, end sill increases the stability of the jump within the stilling basin. It also causes a 13-15 percent reduction in the length of jump and negligible changes of the sequent depth as compared with the jumps occurring in a trapezoidal section with no sill. Finally, a relationship has been proposed for the design of the height and for the location of the sill to control the jump for a wide range of conditions. https://ijswr.ut.ac.ir/article_19930_0f995c9aeb1565edd78adb37d2993d66.pdf