Numerical simulation of dike erosion process due to overtopping flow
Abstract
Dike failures due to overtopping flows have recently occurred during floods. It is of great importance to understand the mechanism of dike failure processes and to predict dike erosion accurately for disaster mitigation. In this study, a numerical model to simulate dike breaching is developed based on a three-dimensional flow model in porous media and density function methods, and a non-equilibrium sediment transport model. Infiltration into a dike is also considered in the simulation. First, a numerical model is applied to flows over a solid embankment in order to validate the flow model. Then, dike erosion processes are simulated. Compared with the previous experimental results, it is shown that the numerical model can reproduce overflows and dike failure processes reasonably.
Source:
Journal of JSCE, 2014, 2, 1, 168-175Collections
Institution/Community
GraFarTY - JOUR AU - Onda, Shinichiro AU - Hosoda, Takashi AU - Jaćimović, Nenad AU - Kimura, Ichiro PY - 2014 UR - https://grafar.grf.bg.ac.rs/handle/123456789/1010 AB - Dike failures due to overtopping flows have recently occurred during floods. It is of great importance to understand the mechanism of dike failure processes and to predict dike erosion accurately for disaster mitigation. In this study, a numerical model to simulate dike breaching is developed based on a three-dimensional flow model in porous media and density function methods, and a non-equilibrium sediment transport model. Infiltration into a dike is also considered in the simulation. First, a numerical model is applied to flows over a solid embankment in order to validate the flow model. Then, dike erosion processes are simulated. Compared with the previous experimental results, it is shown that the numerical model can reproduce overflows and dike failure processes reasonably. T2 - Journal of JSCE T1 - Numerical simulation of dike erosion process due to overtopping flow EP - 175 IS - 1 SP - 168 VL - 2 DO - 10.2208/journalofjsce.2.1_168 ER -
@article{ author = "Onda, Shinichiro and Hosoda, Takashi and Jaćimović, Nenad and Kimura, Ichiro", year = "2014", abstract = "Dike failures due to overtopping flows have recently occurred during floods. It is of great importance to understand the mechanism of dike failure processes and to predict dike erosion accurately for disaster mitigation. In this study, a numerical model to simulate dike breaching is developed based on a three-dimensional flow model in porous media and density function methods, and a non-equilibrium sediment transport model. Infiltration into a dike is also considered in the simulation. First, a numerical model is applied to flows over a solid embankment in order to validate the flow model. Then, dike erosion processes are simulated. Compared with the previous experimental results, it is shown that the numerical model can reproduce overflows and dike failure processes reasonably.", journal = "Journal of JSCE", title = "Numerical simulation of dike erosion process due to overtopping flow", pages = "175-168", number = "1", volume = "2", doi = "10.2208/journalofjsce.2.1_168" }
Onda, S., Hosoda, T., Jaćimović, N.,& Kimura, I.. (2014). Numerical simulation of dike erosion process due to overtopping flow. in Journal of JSCE, 2(1), 168-175. https://doi.org/10.2208/journalofjsce.2.1_168
Onda S, Hosoda T, Jaćimović N, Kimura I. Numerical simulation of dike erosion process due to overtopping flow. in Journal of JSCE. 2014;2(1):168-175. doi:10.2208/journalofjsce.2.1_168 .
Onda, Shinichiro, Hosoda, Takashi, Jaćimović, Nenad, Kimura, Ichiro, "Numerical simulation of dike erosion process due to overtopping flow" in Journal of JSCE, 2, no. 1 (2014):168-175, https://doi.org/10.2208/journalofjsce.2.1_168 . .