Development of A new Hydraulic Relationship for Submerged Slide Gates

Document Type : Research Paper

Authors

Department of Water Resources Engineering , Faculty of Engineering, Shahr Qods Islamic Azad University, Shahr Qods, Tehran, Iran.

Abstract

Slide gates are one of the most common gates used in hydraulic structures. These gates are often in practice hydraulically submerged. The usual method to determine the flow passes through the gate is solving simultaneously the energy and the momentum nonlinear equations by a numerical method. In this manuscript, a large number of various cases of gate sizes and flows are considered and solved numerically by using these two equations to obtain a database. This database is converted to dimensionless groups and then a direct relationship is developed by using three-dimensional curve fitting. The results obtained by the developed relationship is compared with those obtained by the numerical common method. The comparison results in a good agreement which indicates that the developed relationship is accurate and simple to be used in the design of slide gates.

Keywords

References

  1. Henry, H. R. (1950). Discussion on "Diffusion of submerged jets, "by Albertson, M. L. et al., Trans. Am. Society Civil Engrs., 115, 687.
  2. Raeo, G., Rajaratnam, N. (1963). " The submerged hydraulic jump, " Proc. Am. Soc. Civil Engineers, 89(1), 139.
  3. Rajaratnam, N. and Subramaniya, K. (1967). "Flow equation for sluice gates. J. Irrig. Drainage Eng., ASCE, 93:167-186.
  4. Rajaratnam, N. (1977). "Free flow immediately below sluice gates," J. Hydraul. Eng. ASCE, 103(3): 345-351.
  5. Garbrecht, G. (1977). “ Discussion of discharge computation at river control structures.” J. Hydr. Div., 104(12), 1481-1484.
  6. Swamee, P. K. (1992). "Sluice gate discharge equations," J. Irrig. Drainage. Eng., 118: 57-60.
  7. Swamee, P. K. (1988). "Generalized rectangular weirs equations," J. Hydraul. Eng., ASCE 114: 945-949.
  8. Ferro, V. (2000). " Simultaneous flow over and under the gate," J. Irrig. and Drainage Eng., ASCE, 126(3): 190-193.
  9. Negam, A. M., A. A. El-Saiad and O. K. Saleh (1997). "Characteristics of combined flow over weirs and below submerged gates," Proc. of Al-Mansoura Eng., 2 and Intl. Conf., (MEIC` 97), Egypt.
  10. Negam, A. M. (2002). "Combined free flow over the weir and below Gates," J. Hydraul. Res., IAHR, 40(3): 359-365.
Journal of Hydraulic Structures
Volume 4, Issue 2 - Serial Number 8
December 2018
Pages 10-16

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