6533b81ffe1ef96bd1277b98

RESEARCH PRODUCT

New stage-discharge relationship for cylindrical and semi-cylindrical edged sluice gates

Aliasghar BeheshtiAli Naghi ZiaeiM. NourolahiVito FerroN.s.r. Nikou

subject

SluiceGate0207 environmental engineeringFree flow02 engineering and technologyMechanics01 natural sciencesComputer Science ApplicationsPhysics::Fluid Dynamics010309 opticsWater depthFlow control (fluid)Flow conditionsHydraulic structureFree flowModeling and Simulation0103 physical sciencesSettore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-ForestaliElectrical and Electronic EngineeringIncomplete self-similarity020701 environmental engineeringSubmerged flowInstrumentationMathematics

description

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.

yearjournalcountryeditionlanguage
2019-12-01Flow Measurement and Instrumentation
https://doi.org/10.1016/j.flowmeasinst.2019.101639