Hydraulic modeling of three flumes for minimal sedimentation
DOI:
https://doi.org/10.29312/remexca.v15i1.3317Keywords:
hydraulic simulation, natural runoff, sediment flow, water measurementAbstract
The sustainability of water use in agriculture is very important, and to achieve this, proper management of surface water resources is required, which, in small basins, depends on good measurement of flow rate data. This work analyzes the hydraulic performance of three proposed modified long-throated flumes with a 10% slope supercritical channel by using the WinFlume® v.1.06 software for a maximum flow of 50 L s-1, for clean water and in conditions in which the cross section of the inlet was modified by sediments. Hydraulic simulations were performed for triangular, rectangular, and trapezoidal cross sections in the throat and the supercritical channel by using the Iber® v.2.5.2 software to compare the pattern of the WinFlume® gauging curve with the results of Iber®; the difference between both gauging curves was a maximum error of 3% in the three cross-sectional areas. For hydraulic simulation in the supercritical modified cross-sectional area for clean flow water and sediment flow water, data located at half the total length of the supercritical channel were taken. Variations in flow depth assuming sedimentation were negligible, and it was found that the water profile in the supercritical channel was not affected, so it can be used as an indicator. In addition, it was observed that the best cross-sectional area for the channel was the rectangular one with a maximum of 0.9997 R2 for the flow rate curve (Q-h).
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