Flow Measurements Using a Sluice Gate; Analysis of Applicability

Elżbieta Kubrak,Janusz Kubrak,Adam Kiczko,Michał Kubrak

doi:10.3390/w12030819

Elżbieta Kubrak, Janusz Kubrak + Show 2 more

Open Access

https://doi.org/10.3390/w12030819

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Abstract

This study analyzes the possibilities of using an irrigation sluice gate in submerged conditions to measure water flow rate. Hydraulic experiments on sluice gate discharge capacity were performed on a model made on a 1:2 scale. Measurements were taken for the submerged flow of the sluice gate. Nomograms and relationships for discharge coefficients of the analyzed sluice gate were developed. The possibility of using the existing nomogram for discharge capacity of the submerged sluice gate to determine the discharge capacity of the modeled gate was also investigated. The effect of narrowing of the sluice gate cross-section resulting from different mounting techniques on its capacity was explained. The analyses confirmed the possibility of using the formulas for the submerged sluice gate to estimate the flow through the irrigation sluice gate.

Highlights

The use of existing sluice gates in irrigation hydraulic constructions after their calibration to measure the water flow rate is not a new problem [1,2,3,4,5,6,7,8,9]
The water flow through the sluice gate has long been the subject of numerous theoretical analyzes, and laboratory and field experiments [10,11]
Depending on the water depth downstream the gate from its edge, two hydraulic conditions can be distinguished: free and submerged flows

Summary

Introduction

The use of existing sluice gates in irrigation hydraulic constructions after their calibration to measure the water flow rate is not a new problem [1,2,3,4,5,6,7,8,9]. Depending on the water depth downstream the gate from its edge, two hydraulic conditions can be distinguished: free and submerged flows. On the basis of numerous hydraulic experiments, the values of the discharge coefficients used in one-dimensional formulas were determined, linking the water depths upstream and downstream, the gate, and the gate opening height and its width with the water flow rate for both of these flow forms. Most of these experiments were carried out in a flume with a horizontal bottom, a rectangular cross-section and a width, corresponding to the width of the gate

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Conclusion