Effect of Lateral Water Surface Profile on Side Weir Discharge

Muslu, Yilmaz; Tozluk, Hasan; Yüksel, Ebubekir

doi:10.1061/(asce)0733-9437(2003)129:5(371)

Cited by 21 publications

(8 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A wide range of studies have been done to calculate the discharge coefficient of rectangular side weirs [2][3][4][5][6][7][8][9]. When there is a limitation in tributary width and rectangular side weirs cannot handle the diverted flow, one of the most economical alternatives is to use modified side weirs [10][11][12][13][14][15][16][17].…”

Section: Dq DXmentioning

confidence: 99%

Potential of particle swarm optimization based radial basis function network to predict the discharge coefficient of a modified triangular side weir

Zaji

Bonakdari

Shamshirband

et al. 2015

Flow Measurement and Instrumentation

View full text Add to dashboard Cite

Section: Dq DXmentioning

confidence: 99%

Potential of particle swarm optimization based radial basis function network to predict the discharge coefficient of a modified triangular side weir

Zaji

Bonakdari

Shamshirband

et al. 2015

Flow Measurement and Instrumentation

View full text Add to dashboard Cite

“…For a short side weir, the hypothesis of constant specific energy, which is equivalent to assuming S f ¼ S 0 or S f ¼ 0 and S 0 ¼ 0 (S f is friction loss and S 0 is bed slope of the channel), is acceptable (Muslu, 2001;Muslu et al, 2003;Uyumaz and Smith, 1991).…”

Section: Governing Dynamic Equationmentioning

confidence: 99%

Briefing: Water surface profile over side weir in a trapezoidal channel

Vatankhah

2012

Proceedings of the Institution of Civil Engineers - Water Manag

View full text Add to dashboard Cite

Water ManagementVolume 165 Issue WM5Briefing: Water surface profile over side weir in a trapezoidal channel Vatankhah Briefing: Water surface profile over side weir in a trapezoidal channel Side weirs or lateral weirs are widely used for water level control in water treatment plants and irrigation and drainage systems. The side weir is a fixed structure installed at one side of a channel to divert flow laterally.Computation of the water surface profile along the side weir is essential in determination of the discharge over the side weir. An analytical solution of the dynamic equation for spatially varied flow with decreasing discharge, in prismatic channels with a side weir, is available in the technical literature only for the special case of a rectangular channel based on the constant specific energy assumption. However, in irrigation networks, the most common irrigation channels are of trapezoidal cross-section. This paper presents an elegant analytical solution for establishing the water surface profile along a side weir in a trapezoidal channel. Since triangular and rectangular cross-sections are special cases of the trapezoidal cross-section, the proposed analytical solution is also applicable to these crosssections. The solution, which yields a direct computation of the flow profile in subcritical and supercritical flow regimes, should be a useful engineering tool for the evaluation and design of side weirs in open channels.

show abstract

“…Various studies have been done to find the discharge coefficient of rectangular side weirs (Ackers 1957;Ghodsian 2003;Muslu 2001;Muslu et al 2003;Nadesamoorthy and Thomson 1972;Ranga Raju et al 1979;Singh et al 1994;Swamee et al 1994;Yu-Tech 1972;Yuksel 2004). Increasing the discharge capacity of side weirs needs to increase the length of them.…”

Section: Introductionmentioning

confidence: 99%

Optimum Support Vector Regression for Discharge Coefficient of Modified Side Weirs Prediction

Zaji

Bonakdari

2017

INAE Lett

View full text Add to dashboard Cite

Designing procedure of economical and safe side weirs that are used in various hydraulic structures such as intakes and deviation systems, essentially needs the ability to predict the side weirs' discharge capacity accurately. In this paper, the discharge coefficient of a modified labyrinth side weir was modeled by employing the support vector regression (SVR) method. To find the optimum SVR scenario, eight different kernel functions and six different input combinations were investigated. The accuracy of the SVR models were compared with two nonlinear regression equations from other published studies. The results showed that the SVR model with Polynomial Kernel Function and w=L; Fr 1 = sin h 0 ; w=Y 1 and w sin h 0 =Y 1 as input parameters performs better than other models in predicting the discharge coefficient. Where w, L, h 0 , and Y 1 are the height of crest, weir length, oblique side-weir included angle, and upstream flow depth, respectively. Also, the results showed that the SVR model with mean square error (RMSE) of 0.050 performs much better than the two other nonlinear regression published equations with RMSE of 0.121 and 0.4270, respectively.

show abstract

Effect of Lateral Water Surface Profile on Side Weir Discharge

Cited by 21 publications

References 1 publication

Potential of particle swarm optimization based radial basis function network to predict the discharge coefficient of a modified triangular side weir

Potential of particle swarm optimization based radial basis function network to predict the discharge coefficient of a modified triangular side weir

Briefing: Water surface profile over side weir in a trapezoidal channel

Optimum Support Vector Regression for Discharge Coefficient of Modified Side Weirs Prediction

Contact Info

Product

Resources

About