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[Salinan]Disalin!
THEORYAlthough various ways and models have been presented in terms of tables, graphs, and monographs or a set of empirical equations valid in a specified range, it is difficultto design economical energy dissipater due to unavailability of direct equations which are valid for all possible values of discharge and energy loss in the jump.Moreover, no standard equation is available to start the calculations as initial conditions are unknown.Rajaratnam (1965) made detailed measurements of the boundary friction within the jump using a Preston tube and his observations showed that the frictional force is not negligible. He used momentum equation and derived an analytical equation for computing sequent depth ratio
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