Experimental Measurement of the Discharge Coefficient for the Inclined Sluice Gates
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Abstract
Sluice gates are hydraulic devices that regulate channel discharge or redirect water flow from primary to secondary channels. These gates may be positioned in many ways; Some gates are vertical, whereas others are tilted either in the direction of flow or against it, contingent upon their special design function. In this study, several models of sluice gates were considered in different positions in the direction of flow and against it. The sluice gate angles considered were 10°, 20°, 30°, 40°, and 45° in the direction of flow and against flow direction under free flow condition, with the reference position set at 90°, the study was examined how the inclination of the gate influence the amount of discharge coefficient and how the discharge coefficient was affected by the variation in upstream water depth and gate opening height, where the four gate opening heights were (1, 2, 3, and 4) cm. The aim of this research is to determine the discharge coefficient under inclined sluice gates in different positions; furthermore, a general equation of free flow under inclined sluice gates has been established. According to the findings, the discharge coefficient (Cd) increases as the inclination angle of the sluice gate in the direction of flow increases and decreases as the inclination angle of the sluice gate against the direction of flow increases. Also, increasing the gate opening (h) will reduce the discharge coefficient (Cd) to pass the same amount of water through the sluice gate. Finally, empirical equations were derived linking the discharge coefficient values passing under the vertical and incline sliding gates for various openings and conditions using the non-linear regression analysis in (SPSS) program. Additionally, the statistical indices (R2) and Nash–Sutcliffe efficiency (NSE) were used to test the reliability of these equations, and their results for the vertical sluice gate was 0.9868, 0.9766, the incline sluice gate with flow was 0.9897, 0.950 and the incline sluice gate against flow was 0.9793, 0.940 respectively. The analytical approach for estimating the coefficient of discharge under the vertical and inclined sluice gates showed a great fit with experimental findings.
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References
V. T. Chow, " Handbook of applied hydrology," ed: Taylor & Francis, 1965.
E. Weyer, "System identification of an open water channel," Control engineering practice, vol. 9, pp. 1289-1299, 2001.
R. A. E.-H. Rady, "Modeling of flow characteristics beneath vertical and inclined sluice gates using artificial neural networks," Ain Shams Engineering Journal, vol. 7, pp. 917-924, 2016.
C. Erdbrink, V. V. Krzhizhanovskaya, and P. M. Sloot, "Free-surface flow simulations for discharge-based operation of hydraulic structure gates," Journal of Hydroinformatics, vol. 16, pp. 189-206, 2014.
W. Boiten, "Flow measurement structures," Flow Measurement and Instrumentation, vol. 13, pp. 203-207, 2002.
D. D. Fangmeier and T. S. Strelkoff, "Solution for gravity flow under a sluice gate," Journal of the Engineering Mechanics Division, vol. 94, pp. 153-176, 1968.
N. Rajaratnam and K. Subramanya, "Flow equation for the sluice gate," Journal of the Irrigation and Drainage Division, vol. 93, pp. 167-186, 1967.
L. T. Issacs, "Numerical solution for flow under sluice gates," Journal of the Hydraulics Division, vol. 103, pp. 473-481, 1977.
J. H. Masliyah, K. Nandakumar, F. Hemphill, and L. Fung, "Body-fitted coordinates for flow under sluice gates," Journal of Hydraulic Engineering, vol. 111, pp. 922-933, 1985.
J. I. Finnie and R. W. Jeppson, "Solving turbulent flows using finite elements," Journal of Hydraulic Engineering, vol. 117, pp. 1513-1530, 1991.
J. Montes, "Irrotational flow and real fluid effects under planar sluice gates," Journal of Hydraulic Engineering, vol. 123, pp. 219-232, 1997.
A. A. Khanoosh, E. H. Khaleel, and W. S. Mohammed-Ali, "The resilience of numerical applications to design drinking water networks," International Journal of Design & Nature and Ecodynamics, vol. 18, pp. 1069-1075, 2023.
A. H. Cheng, P. L. Liu, and J. A. Liggett, "Boundary calculations of sluice and spillway flows," Journal of the Hydraulics Division, vol. 107, pp. 1163-1178, 1981.
A. Roth and W. H. Hager, "Underflow of standard sluice gate," Experiments in fluids, vol. 27, pp. 339-350, 1999.
N. N. Oskuyi and F. Salmasi, "Vertical sluice gate discharge coefficient," Journal of Civil Engineering and Urbanism, vol. 2, pp. 108-114, 2012.
L. Cassan and G. Belaud, "Experimental and numerical investigation of flow under sluice gates," Journal of Hydraulic Engineering, vol. 138, pp. 367-373, 2012.
F. Salmasi, M. Nouri, P. Sihag, and J. Abraham, "Application of SVM, ANN, GRNN, RF, GP and RT models for predicting discharge coefficients of oblique sluice gates using experimental data," Water Supply, vol. 21, pp. 232-248, 2021.
M. S. Khaleel and A. Y. Mohammed, "A simple technique for preventing vortex with some aspects of flow under inclined sluice gates," Türk Hidrolik Dergisi, vol. 2, pp. 1-7, 2017.
A. Yoosefdoost and W. D. Lubitz, "Sluice gate design and calibration: Simplified models to distinguish flow conditions and estimate discharge coefficient and flow rate," Water, vol. 14, p. 1215, 2022.
M. A. M. Razi, D. Tjahjanto, W. A. W. Mohamed, and N. B. B. Ishak, "Investigation of the properties of flow beneath a sluice gate," in International Conference on Civil Engineering (ICCE08), 2008.
R. Daneshfaraz, H. Abbaszadeh, P. Gorbanvatan, and M. Abdi, "Application of sluice gate in different positions and its effect on hydraulic parameters in free-flow conditions," Journal of Hydraulic Structures, vol. 7, pp. 72-87, 2021.
M. S. Khaleel and A. Y. Mohammed, "Hydrulic Study for Performance of the Vertical and Inclined Gates and Compound on Weir," Master of Science, Irrigation and Drainage Engineering, Mosul, 2002.
W. Baines, "Discussion of diffusion of submerged jets," Trans. Am. Soc. Civil Engrs, vol. 115, p. 679, 1950.
C. Tsai, "Drainage analysis of the gate in Bu-Dai salt collecting yard during Sarah Typhoon," Department of Hydraulic And Ocean Engineering Rep, 1990.
P. K. Swamee, "Sluice-gate discharge equations," Journal of Irrigation and Drainage Engineering, vol. 118, pp. 56-60, 1992.
H. Rouse, "Open Channel Flow. By FM HENDERSON. Macmillan, 1966. 522 pp. $14.95," Journal of Fluid Mechanics, vol. 29, pp. 414-415, 1967.
M. F. Yass, "Hydrodynamic-Morphological Investigation for the Riverbank Stability of Tigris River within Salah Al-Din Governorate," Tikrit University, 2024.
W. S. Mohammed-Ali, "Minimizing the detrimental effects of hydro-peaking on riverbank instability: The lower Osage River case," Missouri University of Science and Technology, 2020.