Abstract
Spillways with breast walls are often used in such situations as increasing the regulating storage of flood discharge or disposing sediment from the reservoirs, etc. The hydraulic characteristics of the spillways with breast walls can be obtained by experimental, analytical and numerical methods. The aim of this study is to predict some characteristics of flow through the spillway with a breast wall with low and average-head operation using the numerical modeling along with some turbulence closure models. The experimental data were used to validate the numerical predictions. The results show that the RNG k-ε and the standard k-ε turbulence models can predict quite precisely some characteristics, such as the water surface, the discharge, and the vertical pressure distribution in comparison with the measured data. However, some errors occur on this pressure in the region nearby the crest boundary. Furthermore, the RNG k-ε turbulence model performed more accurately than the standard k-ε model as compared to the experimental data. Therefore, the RNG k-ε turbulence model uses to properly validate the characteristics of the flow through spillway with a breast wall under various conditions, without recourse to expensive experimental procedures.
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Thanh, N.C., Ling-Ling, W. Physical and numerical model of flow through the spillways with a breast wall. KSCE J Civ Eng 19, 2317–2324 (2015). https://doi.org/10.1007/s12205-015-0742-0
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DOI: https://doi.org/10.1007/s12205-015-0742-0