Discharge Coefficient of Triangular and Asymmetric Labyrinth Side Weirs Using the Nonlinear PLS Method
Publication: Journal of Irrigation and Drainage Engineering
Volume 142, Issue 11
Abstract
Side weirs are hydraulic control structures widely used in irrigation and drainage systems as well as wastewater treatment plants. These structures also serve as adjusting/diverting flow structures with a minimum head loss. In the present study, by applying experimental data of more than 400 laboratory tests and using the multivariable nonlinear partial least-squares (PLS) method, three nonlinear equations are proposed for discharge coefficient, , of triangular and asymmetric labyrinth side weirs. These equations relate the discharge coefficient to the relevant geometrical and hydraulic dimensionless characteristics of flow. Results indicate that the new proposed equations are more accurate compared to those of former studies, being the best tools to estimate the diverted flow discharge over the side weirs.
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Acknowledgments
This research was partially financed by the Water Research Council, affiliated with the Ministry of Energy of Iran.
References
Aydin, M. (2015). “Investigation of a sill effect on rectangular side-weir flow by using CFD.” J. Irrig. Drain Eng., 04015043.
Aydin, M., and Kayisli, K. (2016). “Prediction of discharge capacity over two-cycle labyrinth side weir using ANFIS.” J. Irrig. Drain Eng., 06016001.
Aydin, M. C. (2012). “CFD simulation of free-surface flow over triangular labyrinth side weir.” Adv. Eng. Software, 45(1), 159–166.
Aydin, M. C., and Emiroglu, M. E. (2016). “Numerical analysis of subcritical flow over two-cycle trapezoidal labyrinth side weir.” Flow Meas. Instrum., 48, 20–28.
Azimi, H., and Shabanlou, S. (2015). “The flow pattern in triangular channels along the side weir for subcritical flow regime.” Flow Meas. Instrum., 46, 170–178.
Azimi, H., Shabanlou, S., and Salimi, M. S. (2014). “Free surface and velocity field in a circular channel along the side weir in supercritical flow conditions.” Flow Meas. Instrum., 38, 108–115.
Bonakdari, H., Zaji, A. H., Shamshirband, S., Hashim, R., and Petkovic, D. (2015). “Sensitivity analysis of the discharge coefficient of a modified triangular side weir by adaptive neuro-fuzzy methodology.” Measurement, 73, 74–81.
Borghei, S. M., Nekooie, M. A., Sadeghian, H., and Jalili, M. R. (2013). “Triangular labyrinth side weirs with one and two cycles.” Proc. Inst. Civ. Eng.-Water Manage., 166(1), 27–42.
Borghei, S. M., and Parvaneh, A. (2011). “Discharge characteristics of a modified oblique side weir in subcritical flow.” Flow Meas. Instrum., 22(5), 370–376.
Cheong, H.-F. (1991). “Discharge coefficient of lateral diversion from trapezoidal channel.” J. Irrig. Drain. Eng., 461–475.
Crispino, G., Cozzolino, L., Della Morte, R., and Gisonni, C. (2015). “Supercritical low-crested bilateral weirs: Hydraulics and design procedure.” J. Appl. Water Eng. Res., 3(1), 35–42.
Emiroglu, M. E., Aydin, M. C., and Kaya, N. (2014). “Discharge characteristics of a trapezoidal labyrinth side weir with one and two cycles in subcritical flow.” J. Irrig. Drain. Eng., 04014007.
Emiroglu, M. E., Kisi, O., and Bilhan, O. (2010). “Predicting discharge capacity of triangular labyrinth side weir located on a straight channel by using an adaptive neuro-fuzzy technique.” Adv. Eng. Software, 41(2), 154–160.
Fritz, H. M., and Hager, W. H. (1998). “Hydraulics of embankment weirs.” J. Hydr. Eng., 963–971.
Gonzalez, J., Rojas, H., Ortega, J., and Prieto, A. (2002). “A new clustering technique for function approximation.” IEEE Trans. Neural Networks, 13(1), 132–142.
Hager, W. H. (1987). “Lateral outflow over side weirs.” J. Hydraul. Div., 491–504.
Nezami, F., Farsadizadeh, D., and Nekooie, M. A. (2015). “Discharge coefficient for trapezoidal side weir.” Alexandria Eng. J., 54(3), 595–605.
Parsaie, A., and Haghiabi, A. (2015). “The effect of predicting discharge coefficient by neural network on increasing the numerical modeling accuracy of flow over side weir.” Water Resour. Manage., 29(4), 973–985.
Parvaneh, A. (2008). “Improving efficiency of labyrinth side weirs using asymmetric geometry.” M.Sc. thesis, Dept. of Civil Engineering, Sharif Univ. of Technology, Tehran, Iran.
Parvaneh, A., Borghei, S., and Jalili Ghazizadeh, M. R. (2012). “Hydraulic performance of asymmetric labyrinth side weirs located on a straight channel.” J. Irrig. Drain. Eng., 766–772.
Parvaneh, A., Borghei, S. M., and Jalili Ghazizadeh, M. R. (2011). “Discussion of ‘Discharge capacity of labyrinth side weir located on a straight channel.” J. Irrig. Drain. Eng., 743–745.
Parvaneh, A., Yang, J., Javaheri, A, and Kabiri-Samani, A. R. (2016). “Discussion: Triangular labyrinth side weirs with one and two cycles.” Proc. Inst. Civ. Eng. Water Manage., in press.
Ramamurthy, A. S., Qu, J., and Vo, D. (2006). “Nonlinear PLS method for side weir flows.” J. Irrig. Drain. Eng., 486–489.
Ura, M., Kita, Y., Akiyama, J., Moriyama, H., and Kumar, J. A. (2001). “Discharge coefficient of oblique side-weirs.” J. Hydrosci. Hydraul. Eng., 19(1), 85–96.
Uyumaz, A. (1992). “Side weir in triangular channel.” J. Irrig. Drain. Eng., 965–970.
Vatankhah, A. R. (2012). “Analytical solution for water surface profile along a side weir in a triangular channel.” Flow Meas. Instrum., 23(1), 76–79.
Vatankhah, A. R. (2013). “Water surface profile along a side weir in a parabolic channel.” Flow Meas. Instrum., 32, 90–95.
Zaji, A. H., Bonakdari, H., Khodashenas, S. R., and Shamshirband, S. (2016). “Firefly optimization algorithm effect on support vector regression prediction improvement of a modified labyrinth side weir’s discharge coefficient.” Appl. Math. Comput., 274, 14–19.
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Published In
Journal of Irrigation and Drainage Engineering
Volume 142 • Issue 11 • November 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Nov 11, 2015
Accepted: Apr 6, 2016
Published online: Jun 17, 2016
Published in print: Nov 1, 2016
Discussion open until: Nov 17, 2016
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