| dc.description.abstract | Hydraulic jump is a phenomenon that occurs whenever the flow profile changes from supercritical to subcritical. In this transition, the water surface suddenly raised, surface rollers are formed, intense mixing occurs, air is entrained, with a considerable amount of water energy is dissipated. This paper presents the results of an experimental investigation on the characteristics of the formed drowned hydraulic jump on a horizontal slotted bed, (counterflow). In the current study, the counterflow was used as an energy dissipation method. Experiments were carried out to study the effect of different counterflow dimensions, represented in slot position, inclination angle of slot and slot width on both the length and the submergence ratio of the drowned jump. Graphical presentations were given, describe the relations between the percentage reduction in the length of the hydraulic jump and Approach Froude number due to variation of slot dimensions, for a Froude number ranges from 8.74 to 13.45. The results show that both the percentage reduction in the jump length and the submergence ratio increase as Froude number increases. | en_US |
