New stage-discharge relationship for cylindrical and semi-cylindrical edged sluice gates
- Authors: Ferro V.; Ziaei A.N.; Nikou N.S.R.; Nourolahi M.; Beheshti A.A.
- Publication year: 2019
- Type: Articolo in rivista
- OA Link: http://hdl.handle.net/10447/391381
Abstract
Gates are simple hydraulic structures which have been widely used for flow control and measurement in irrigation networks. In this paper new sluice gates with cylindrical and semi-cylindrical edges were introduced and the flow movement below these types of gates was experimentally investigated for both free- and submerged-flow conditions. The Buckingham theorem of dimensional analysis and the self-similarity theory were applied for developing the stage-discharge relationships for the two investigated flow conditions. For these cylindrical and semi-cylindrical edged gates and a free-flow condition, the proposed stage-discharge relationship was characterized by an estimate error less than or equal to 5% for 96.0% and 93.7% of the calculated values, respectively. Finally, an equation for calculating the maximum tail water depth allowing free flow condition was proposed.