Determination of Energy Dissipation in Stepped Spillways Using Finite Element and Finite Volume Methods

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Determination of Energy Dissipation in Stepped Spillways Using Finite Element and Finite Volume Methods

Original Article, C24
Shoja F, Nikpour M.R, Sadeghi H.
Journal. Civil Eng. Urban. 3(4):150-155. 2013

ABSTRACT:Accurate and suitable design of Spillways as major parts of dams is very important in the stability and safety of dams. In this study, flow over stepped spillway was simulated in 2D by solving poisson functions of stream and pressure in Finite Element method and with analyzing k-ε turbulence and volume of fluid models in Finite Volume technique. Also a comparison was done between the results of numerical models and measured values in order to investigate the accuracy of the models in calculation of energy dissipation. The relative error percent average of energy dissipation calculation using Finite Element and Finite Volume approaches was achieved 2.85% and 1.26%, respectively. Results showed Finite Volume approach could be employed slightly better than Finite Element method in modelling flow hydraulic over stepped spillway.
Keywords: Finite Element, Finite Volume, Stepped Spillway, Turbulence Model, Volume of Fluid Model

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