Dam spillways and the SPH method: two case studies in Portugal

Moreira, Andreia; Leroy, Agnès; Violeau, Damien; Taveira-Pinto, Francisco

doi:10.1080/23249676.2019.1611496

Cited by 9 publications

(3 citation statements)

References 37 publications

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“…[35]; Mahesh Prakash used the SPH method to simulate the 1928 Francis dam failure and studied the distance and depth of post-failure flood impact [36]. Andreia Moreira et al applied the SPH method to predict the flow characteristics of the spillways and dissipaters of the Crestuma and Caniçada dams in Portugal [37].…”

Section: Post-dam Failure Impactsmentioning

confidence: 99%

“…Huang et al used SPH to analyze the migration law of landslide and debris flow hazards in relation to the Wenchuan earthquake [31]; Vacondio et al applied SPH to simulate the law of water flow caused by landslides in reservoirs, and the simulation results effectively reproduced key parameters such as the maximum climbing distance and height of water flow [32]; Rodrigue-Paz et al proposed a modified friction boundary conditions method, and introduced the improved instantonal equations into the SPH method to simulate mudflow hazards based on the CSPH (Corrected Smooth Particle Hydrodynamics) theory-the numerical solution matched the experimentally obtained test results with good accuracy [33]; Dai et al established a coupled SPH model to simulate mountain mudflow-structure interactions [34]; V. Roubtsova et al performed a threedimensional simulation of the Vaiont dam disaster that occurred in northern Italy in 1963 to verify the applicability of the SPH technique to problems in free surface flow[35]; Mahesh Prakash used the SPH method to simulate the 1928 Francis dam failure and studied the distance and depth of post-failure flood impact[36]. Andreia Moreira et al applied the SPH method to predict the flow characteristics of the spillways and dissipaters of the Crestuma and Caniçada dams in Portugal[37].…”

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confidence: 99%

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Study on the Evolution of a Flooded Tailings Pond and Its Post-Failure Effects

Chang

Qin

Wang

et al. 2022

Water

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In order to avoid the risk of tailing pond failures and to minimize the post-failure losses, it is necessary to analyze the current operation status of tailings ponds, to explore the evolution law of their failure process, to grasp their post-failure impact range, and to propose corresponding effective prevention and control measures. Based on a tailings pond in China, this paper establishes a 1:200 scale indoor model to explore the evolution law of post-failure tailings discharge in a tailings pond under flooded roof conditions; secondly, the finite element difference method and smooth particle fluid dynamics are combined to compare and analyze the post-failure impact area and to delineate the risk prevention and control area. The results of the study show that, during the dam break, the lower tailing sand in the breach is the first to slip, and after forming a steep can, the upper tailing sand in the steep can is pulled to slip, so that the erosion trench mainly develops vertically first, and then laterally. The velocity of the discharged tailing sand will quickly reach its peak value in a short period of time and then decrease to the creeping stage; the front edge of the sand flow is the first to stop moving, and the trailing edge of the tailing sand accumulation depth continues to increase until the end of the dam failure, at which point the initial bottom dam area of the discharge tailing sand flow velocity is the largest. The further the tailings are released from the initial dam, the smaller the accumulation depth and the larger the particle size, and the larger the elevation of the foundation in the same section, the smaller the accumulation depth and the larger the particle size; further, the presence of blocking materials will increase the local tailings accumulation depth. Based on the maximum flow velocity of the discharged tailings and the accumulation depth, the risk area downstream of the tailings pond is divided, so that relocation measures can be formulated. The test results can provide an important reference for the operation and management of similar tailings ponds.

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Section: Post-dam Failure Impactsmentioning

confidence: 99%

mentioning

confidence: 99%

Study on the Evolution of a Flooded Tailings Pond and Its Post-Failure Effects

Chang

Qin

Wang

et al. 2022

Water

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“…The simulation of turbulent flows involving free surfaces is critical in hydraulic engineering. Researchers have explored various numerical techniques, including the volume of fluid model (VOF) [19] or smoothed particle hydrodynamics-SPH [20] together with different turbulent models. InterFoam, a VOF integrated into the OpenFOAM ® framework, is widely employed for modeling free-surface phenomena.…”

Section: Introductionmentioning

confidence: 99%

Digital Flow in a Pool Induced by a Vertical Jet

Carvalho,

Lopes,

Beg

2024

Water

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Turbulent water jets remain a critical study area, particularly the relation of the water flow with air entrainment and its role in energy dissipation at different hydraulic structures. Plunge pools, formed by the impact of jets on water cushions, play a pivotal role in energy dissipation. Understanding the complex flow dynamics within these pools is essential for designing efficient hydraulic structures. In this research, we present a comprehensive investigation of different numerical simulations, defining two-phase (air-water) in different ways, and them compare with experimental measurements. The primary objective is to analyze the pressure distribution at the bottom of a plunge pool induced by a vertical jet and understand the importance of accurately defining air-water flow in the dynamics of the jet into the pool. Our study bridges the gap between empirical data and computational modeling, shedding light on the intricate behavior of such flows with different method-based solvers: VOF, sub-grid, and multi-phase Euler. Various computational domains, mesh configurations, and analyses spanning different time periods, frequencies, and scales were considered.

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