Reservoir routing with outflow through rockfill dams

Samani, Jamal Mohammad Vali; Samani, Hossein Mohammad Vali; Shaiannejad, M.

doi:10.1080/00221686.2004.9728409

Cited by 4 publications

(7 citation statements)

References 4 publications

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“…In this section the results of developed model are compared with the results of measure routed hydrograph in a detention rockfill dam reported by Samani and Shaiannejad (2004). In this respect, the numerical model results are used to calculate the flood routed hydrograph and compare with the results reported by Samani and Shaiannejad (2004).…”

Section: Comparing Model Results With Measured Datamentioning

confidence: 99%

“…In Figure 2 a schematic illustration of detention rockfill dam parameters is shown. Since these types of detention dams are constructed by coarse media, the flow through them deviates Darcy's law and follows turbulent non-linear law (Samani & Shaiannejad, 2004). The non-darcian equation of flow velocity in coarse porous media is described by the following power law:…”

Section: Seepage Discharge Through Detention Rockfill Dammentioning

confidence: 99%

“…The authors derived values of a and b coefficients by using an experimental model setup and optimization technique. The optimized values of a and b equals to 54 and −0.077, respectively (Samani & Shaiannejad, 2004).…”

Section: Seepage Discharge Through Detention Rockfill Dammentioning

confidence: 99%

“…This study is based on the wide range of m, n, z o , k, I p , t p , d, L, θ and s parameters, published in previous literature (Graber, 2009;McEnroe, 1992;Samani & Shaiannejad, 2004). This numerical solution was conducted on 36000 different compositions of these parameters.…”

Section: Numerical Nonlinear Flood Routing In Detention Rockfill Damsmentioning

confidence: 99%

“…Although some experimental and theoretical studies are done on flow over Gabion Weirs (Mohamed, 2010); Discharge through a Permeable Rubble Mound Weir (Chanson, 2006;Michioku, Maeno, Furusawa, & Haneda, 2005); Numerical modeling of 3-D flow on porous broad crested weirs (Mohammadpour, Ghani, & Azamathulla, 2013). None of these methods counts for the rockfill detention dam designs (Hansen, Garga, & Townsend, 1995;Riahi Madvar et al, 2009;Samani & Shaiannejad, 2004). In this topic, some researchers developed simple graphical methods for preliminary designing the detention non-rockfill dams that relate linearly with the volume of the reservoir to the depth of water and single bottom orifice outlet device (Akan, 1990;Froehlich, 2009;Guo, 2001).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Developing a mathematical framework in preliminary designing of detention rockfill dams for flood peak reduction

Riahi-Madvar

Dehghani

Akib

et al. 2019

Engineering Applications of Computational Fluid Mechanics

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Hydraulic designing of rockfill detention dam is based on the treatment of nondarcian and non-linear turbulence flow in coarse porous media. Previous literature focused only on the regular outlet ponds, and there is a shortcoming in the design methodology for detention rockfill dams. So, this paper develops a simple novel design framework by combining the governing equation of non-linear and non-darcian flow through rockfill dams with the hydrologic flood routing in reservoirs and hydraulic rules of storage dams. An innovative mathematical framework developed for preliminary designing of detention rockfill dams. The effects of type and size of rock fill materials, the shape of reservoir, shape, and intensity of inflow hydrograph on the peak of outflow, the volume of a stored flood, coefficients of flood peak and storage are investigated by parametric study in 36000 simulations. A simple design equation for preliminary designing of detention rockfill dams is provided and its applications in two design examples are presented. Its results indicate that the developed design equation (with R 2 = 0.996, MAE = 0.008, and RMSE = 0.0041) is superior to the previous equations and can be used in preliminary designing of detention rockfill dams for flood peak reduction.

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Section: Comparing Model Results With Measured Datamentioning

confidence: 99%

Section: Seepage Discharge Through Detention Rockfill Dammentioning

confidence: 99%

Section: Seepage Discharge Through Detention Rockfill Dammentioning

confidence: 99%

Section: Numerical Nonlinear Flood Routing In Detention Rockfill Damsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Developing a mathematical framework in preliminary designing of detention rockfill dams for flood peak reduction

Riahi-Madvar

Dehghani

Akib

et al. 2019

Engineering Applications of Computational Fluid Mechanics

View full text Add to dashboard Cite

show abstract

Implicit Finite-Volume Scheme to Solve Coupled Saint-Venant and Darcy–Forchheimer Equations for Modeling Flow Through Porous Structures

Sarkhosh

Salama

Jin

2021

Water Resour Manage

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A one-dimensional semi-implicit finite volume modeling of non-inertia wave through rockfill dams

Sarkhosh

Salama

Jin

2020

Journal of Hydroinformatics

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For hydraulic routing through coarse rockfill dams, there is still debate on whether the inertia terms might be neglected as a result of the drag force generated by the rock materials. In this study, a one-dimensional unsteady model for flow-through rockfill dams is built. For this purpose, inertia terms of Saint–Venant equations are disregarded. A semi-implicit scheme adopted for linearizing the nonlinear friction term within the time integration satisfies the Courant–Friedrich–Lewy stability criterion. The most challenging issue in the modeling of flows through rockfill dams is the appropriate definition of boundary conditions at the dam's exit zone. In addition to the analysis of different exit boundary conditions proposed in the literature, a Neumann-type boundary condition suitable for the non-inertia wave equation is also employed to estimate the exit boundary condition. This procedure is basically in appreciation of the nonlinear behavior of the water surface closer to the exit boundary. Due to the existence of the sloping edges in the trapezoidal-shaped dam, an effective length is considered for the solution domain. Finally, the model is compared with observed data and a dynamic wave model. A very good match is observed, which builds confidence in the presented modeling approach.

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Reservoir routing with outflow through rockfill dams

Cited by 4 publications

References 4 publications

Developing a mathematical framework in preliminary designing of detention rockfill dams for flood peak reduction

Developing a mathematical framework in preliminary designing of detention rockfill dams for flood peak reduction

Implicit Finite-Volume Scheme to Solve Coupled Saint-Venant and Darcy–Forchheimer Equations for Modeling Flow Through Porous Structures

A one-dimensional semi-implicit finite volume modeling of non-inertia wave through rockfill dams

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