Effect of Prismatic Sill on the Performance of Free Flow under Sluice Gate

Authors

  • Shaker A. Jalil University of Duhok
  • Sarhan A. Sarhan University of Duhok
  • Safa S. Ibrahim University of Zakho

Keywords:

Coefficient of discharge, Flow head, Gate opening, Sill height, Sluice gate

Abstract

Sills under sluice gates is used in hydraulic structures; their effect on the head generated upstream gates for certain rate of flow is related to the height and length of sill. A study is held in laboratory flume on four different prismatic sill heights and one model without sill by changing the gate opening four times for each model. Statistical analyses on the dimensionless physical quantities are done. A positive effect of sill on the performance of flow is noted by increasing the flow rate up to 25% for some models. The coefficient of discharge decreases with increase of relative sill height to the head upstream and increases with three other dimensionless parameters. The relative sill height to the gate opening shows the highest correlation factor with the discharge coefficient and its positive effect on the flow phenomena is 55.4%. Within the experimental measures limitations, a linear equation for predicting the discharge coefficient is proposed with Adj. R2 0.923.

Author Biographies

Shaker A. Jalil, University of Duhok

Water Resources Engineering Department, College of Engineering, University of Duhok, Kurdistan Region-Iraq

Sarhan A. Sarhan, University of Duhok

Water Resources Engineering Department, College of Engineering, University of Duhok, Kurdistan Region-Iraq

Safa S. Ibrahim, University of Zakho

Petroleum Engineering Department, College of Engineering, University of Zahko, Kurdistan Reion- Iraq

References

Alhamid, A. A. (1998), Coefficient of Discharge for free flow Sluice Gates, Journal of King Soud University, 11 (1), 33-48.
Belaud G., Cassan L. and Baume J. P. (2009), Calculation of Contraction Coefficient under Sluice Gates and Application to Discharge Measurement. Journal of Hydraulic Engineering, ASCE; 135 (12):1086-1091.
Cassan L. and Belaud G. (2012), Experimental and Numerical Investigation of Flow under Sluice Gates. Journal of Hydraulic Engineering, ASCE; 138 (4): 367–373.
Clemens A. J., Strelkoff T. S., and Replgle J. A. (2003), Calibration of submerged radial gates. Journal of Hydraulic Engineering, ASCE.; 129 (9): 680-687.
Clemmens, A., Strelkoff, T., and Replogle, J. (2003), Calibration of Submerged Radial Gates. Journal Hydraulic. Eng.; 129 (9):680–687.
Fangmeier D., and Strelkoff T. (1968), Solution for Gravity Flow under Sluice Gate. Journal of Engineering, Mech. Div.; 94 (EM1):153–176.
Gilles Belaud, Ludovic Cassan, and Jean-Pierre Baume. (2009), Calculation of Contraction Coefficient under Sluice Gates and Application to Discharge Measurement, Journal of Hydraulic Engineering; 135 (12): 1086-
1091.
Habibzadeh A., VatankhahA. R. and Rajaratnam N. (2011), Role of Energy Loss on Discharge Characteristics of Sluice Gates. Journal of Hydraulic Engineering, ASCE.; 137 (9):1079-1084.
Hongwei Yang. (2013), The case for being automatic: Introducing the automatic linear modeling (LINEAR) Procedure in SPSS Statistics. Multiple Linear Regression Viewpoint; 39 (2): 27-37.
Ibrahim, A.A. (2000), Analysis and Formulation of Supercritical Submerged Flow Below Gate in Radial Basin with Lateral Sill, Engineering Research Journal, Al-Mataria Faculty of Eng., Helwan University; 68, 117-
130.
Jung-Fu Yen, Chih-Han Lin and Chang-Tai Tsai. (2001), Hydraulic Characteristics and Discharge Control of Sluice Gates, Journal of the Chinese Institute of Engineers; 24 (3): 301-310.
Larock B. (1969), Gravity-affected flow sluice gate. Journal of Hydraulic Div.;95 (HY4): 153–176.
Lin C. H., Yen J. F. and Tsai C. T. (2002), Influence of Sluice Gate Contraction Coefficient on Distinguishing Condition, Journal of Irrigation and Drainage Engineering, ASCE.; 128 (4): 249-252.
Lozano D., Mateos L., Merkley G. P. and Clemmens A. J. (2009), Field Calibration of Submerged Sluice Gates in Irrigation Canals. Journal of Irrigation and Drainage Engineering, ASCE.; 135 (6):763-772.
Navid, N. O. and Farzin S. (2012), Vertical Sluice Gate Discharge Coefficient, Journal of Civil Engineering and Urbanism; 2 (3):108-114
Neveen Y.Saad. (2000), Flow under a Submerged Gate with a Circular- Crested Sill, Nile Basin Water Science and Engineering Journal; 4 (2): 1-9.
Rajaratnam N., and Humphries J.A. (1982), Free Flow Upstream of Vertical Sluice Gates, Journal of Hydraulic Research.; 20 (5):427-437.
Swamee P. K. (1992), Sluice gate discharge equations. Journal of Irrigation and Drain Engineering, ASCE; 118 (1): 56-60.
Swamee P. K., Pathak S. K., Mansoor T., and Ojha. C. S. P. (2000), Discharge Characteristics of Skew Sluice Gates. Journal of Irrigation and Drain Engineering, ASCE; 126 (5): 328-334.
Vanden-Broeck J. (1997), Numerical Calculations of the Free-Surface Flow under a Sluice Gate. Journal Fluid Mech.; 330: 339–347.

Downloads

Published

2016-06-30

How to Cite

Jalil, S. A., Sarhan, S. A., & Ibrahim, S. S. (2016). Effect of Prismatic Sill on the Performance of Free Flow under Sluice Gate. Science Journal of University of Zakho, 4(1), 150–158. Retrieved from https://sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/320

Issue

Section

Science Journal of University of Zakho