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EnglishGates 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.
| Data di pubblicazione: | 2019 |
| Titolo: | New stage-discharge relationship for cylindrical and semi-cylindrical edged sluice gates |
| Autori: | |
| Citazione: | Ferro, V., Ziaei, A., Nikou, N., Nourolahi, M., & Beheshti, A. (2019). New stage-discharge relationship for cylindrical and semi-cylindrical edged sluice gates. FLOW MEASUREMENT AND INSTRUMENTATION, 70, 101639. |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.flowmeasinst.2019.101639 |
| 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. |
| URL: | https://www.journals.elsevier.com/flow-measurement-and-instrumentation |
| Settore Scientifico Disciplinare: | Settore AGR/08 - Idraulica Agraria E Sistemazioni Idraulico-Forestali |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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http://hdl.handle.net/10447/391381
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