EXPERIMENTAL AND FIELD INVESTIGATION OF THE USE OF RADIAL GATES AS FLOWMEASUREMENT STRUCTURES AT FREE AND SUBMERGED FLOW CONDITIONS

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AMINPOUR Y.; YASI M.; FARHOUDI J.; KHALILI SHAYAN H.

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Journal: Journal of Water and Soil Year:2014 | Volume:28 | Issue:4 Page(s): 695-707

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Title

EXPERIMENTAL AND FIELD INVESTIGATION OF THE USE OF RADIAL GATES AS FLOWMEASUREMENT STRUCTURES AT FREE AND SUBMERGED FLOW CONDITIONS

Author(s)

AMINPOUR Y. | YASI M. | FARHOUDI J. | KHALILI SHAYAN H. | Issue Writer Certificate

Keywords

RADIAL GATEQ2

FLOW MEASUREMENTQ1

DISCHARGE COEFFICIENTQ2

FREE FLOWQ1

SUBMERGED FLOWQ1

Abstract

The development of an enhanced approach for the use of RADIAL GATEs as FLOW MEASUREMENT structures is important in irrigation networks. In this study, new theoretical relationships were developed to estimate the DISCHARGE COEFFICIENT (Cd) for a single RADIAL GATE with three different sills, at free and SUBMERGED FLOW conditions. These equations were calibrated and verified by using about 2600 laboratory data from the worldwide literature. Results indicated that the flow rate under the RADIAL GATEs can be estimated by an error in theorder of ±5%. The reliability of the proposed relationships and in particular the scale effects, were tested using530 field data of RADIAL GATEs operating on different canal networks. The predictions of the flow rates from the proposed method are shown to be superior compare with the other predictive methods. In the presence of multiRADIAL GATEs in a given cross section, the total discharge is estimated by an error up to ±30% when using singleRADIAL GATE relationships. This discrepancy is considered to be mainly due to the influence of different gateopeningsand the difference between gate and canal widths. A self-developed correction factor, k, was in troducedto account for the dimensionless effective parameters such as the ratio of gate-to-canal width, the geometry of the gates, and the ratios of upstream and downstream depths to the average gates openings. The results are promising the predictive errors of the total flow rates are reduced by ±5% and ±10% for 74% and 94% of theflow data, respectively.

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APA: Copy

AMINPOUR, Y., YASI, M., FARHOUDI, J., & KHALILI SHAYAN, H.. (2014). EXPERIMENTAL AND FIELD INVESTIGATION OF THE USE OF RADIAL GATES AS FLOWMEASUREMENT STRUCTURES AT FREE AND SUBMERGED FLOW CONDITIONS. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 28(4), 695-707. SID. https://sid.ir/paper/141236/en

Vancouver: Copy

AMINPOUR Y., YASI M., FARHOUDI J., KHALILI SHAYAN H.. EXPERIMENTAL AND FIELD INVESTIGATION OF THE USE OF RADIAL GATES AS FLOWMEASUREMENT STRUCTURES AT FREE AND SUBMERGED FLOW CONDITIONS. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)[Internet]. 2014;28(4):695-707. Available from: https://sid.ir/paper/141236/en

IEEE: Copy

Y. AMINPOUR, M. YASI, J. FARHOUDI, and H. KHALILI SHAYAN, “EXPERIMENTAL AND FIELD INVESTIGATION OF THE USE OF RADIAL GATES AS FLOWMEASUREMENT STRUCTURES AT FREE AND SUBMERGED FLOW CONDITIONS,” JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), vol. 28, no. 4, pp. 695–707, 2014, [Online]. Available: https://sid.ir/paper/141236/en

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