Assessment of Water Measurements in an Irrigation Canal System Based on Experimental Data and the CFD Model
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College of Water Resources and Architectural Engineering, Shihezi University, Shihezi 832000, China
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Shenzhen Water Planning & Design Institute Co., Ltd., Shenzhen 518001, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Agostino Lauria
Water 2021, 13(21), 3102; https://doi.org/10.3390/w13213102
Received: 22 September 2021
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Revised: 27 October 2021
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Accepted: 2 November 2021
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Published: 4 November 2021
(This article belongs to the Special Issue CFD Modelling of Free Surface Flows)
Due to their convenience, water measuring structures have become an important means of measuring water in irrigation canal systems However, relevant research on upstream and downstream water-depth monitoring point locations is scarce. Our study aims to determine the functional relationship between the locations of the water-depth monitoring points and the opening width of the sluice. We established 14 trunk-channel and branch-channel hydrodynamic models. The locations of the water-depth monitoring points for the upstream and downstream reaches and their hydraulic characteristics were assessed using a numerical simulation and hydraulic test. The results showed that the locations of the upstream and downstream water-depth monitoring points were, respectively, 16.26 and 15.51 times the width of the sluice. The average error between the calculated flow rate and the simulated value was 14.37%; the average error between the flow rates calculated by the modified and the simulated values was 3.36%. To further verify the accuracy of the modified discharge calculation formula, by comparing the measured values, we reduced the average error of the modified formula by 19.29% compared with the standard formula. This research provides new insights into optimizing water measurements in irrigation canal systems. The results provide an engineering basis for the site selection of water-depth monitoring points that is suitable to be widely applied in the field.
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Keywords:
specific location for measuring; simulation and field test; irrigation canal system; measurement accuracy; flow rate correction coefficient
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MDPI and ACS Style
Xu, H.; Wang, Z.; Li, W.; Wang, Q. Assessment of Water Measurements in an Irrigation Canal System Based on Experimental Data and the CFD Model. Water 2021, 13, 3102. https://doi.org/10.3390/w13213102
AMA Style
Xu H, Wang Z, Li W, Wang Q. Assessment of Water Measurements in an Irrigation Canal System Based on Experimental Data and the CFD Model. Water. 2021; 13(21):3102. https://doi.org/10.3390/w13213102
Chicago/Turabian StyleXu, Hu, Zhenhua Wang, Wenhao Li, and Qiuliang Wang. 2021. "Assessment of Water Measurements in an Irrigation Canal System Based on Experimental Data and the CFD Model" Water 13, no. 21: 3102. https://doi.org/10.3390/w13213102
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