Numerical simulation of dam breaking and the influence of sloshing on the transfer of water between compartments

Celis, Miguel A.; Wanderley, Juan B. V.; Neves, Marcelo A. S.

doi:10.1016/j.oceaneng.2017.09.029

Cited by 13 publications

(4 citation statements)

References 15 publications

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“…Compared with the traditional flume model test, application of numerical simulation methods to study and analyze the riverblocking mechanism induced by debris flow is more costeffective, time-saving, and is easier to change parameters (Szczukiewicz et al, 2014;Celis et al, 2017).…”

Section: Numerical Simulation Of River Blockingmentioning

confidence: 99%

Review of Investigations on Hazard Chains Triggered by River-Blocking Debris Flows and Dam-Break Floods

Chen

Ruan²,

Chen³

et al. 2022

Front. Earth Sci.

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The Tibetan Plateau suffers from various types of geohazards (collapses, landslides, and debris flows.) due to abrupt changes in complex topography and weather conditions. Global warming and frequent high-intensity earthquakes in recent years have exacerbated the situation. Collapses and landslides provide vast amount of soil and debris which are conveyed downstream by runoff caused by extreme rainfalls to form large-scale debris flows; then, the debris flows block rivers and finally form dam-break floods, that is, a hazard chain triggered by debris flows. Along the evolution direction of the hazard chain, the affected areas are constantly amplified. This study first summarizes the related research studies on river blockage, debris-flow dam failure, and the hazard chain triggered by debris flows and then points out the drawbacks of existing research studies. Overall, the research (including mechanism, risk assessment, key prevention, and control technologies) on the hazard chain triggered by debris flows is still in its infancy and is disconnected among single hazard types in the hazard chain; meanwhile, the understanding of the mechanism of debris flow blocking the river is not enough; the established model and discriminant have minimal application scope, and there is no empirical model and dynamic model of debris-flow dam failure. Finally, several key scientific issues of this field were raised: 1) it is necessary to elaborate the coupling mechanism of debris-flow dam formation and construct the discriminant and numerical model of debris flow blocking the river with high precision and a wide application range. 2) It is necessary to further study the failure mechanism of a debris-flow dam, construct the numerical model of the failure process of a debris-flow dam, and accurately simulate the outburst flood hydrograph. 3) It is necessary to clarify the critical transformation conditions and dynamic evolution process of the hazard chain caused by debris flows, complete the accurate quantitative simulation of the whole disaster chain process, then establish a complete risk assessment system of the hazard chain, and finally develop some key prevention and control technologies suitable for the hazard chain.

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Section: Numerical Simulation Of River Blockingmentioning

confidence: 99%

Review of Investigations on Hazard Chains Triggered by River-Blocking Debris Flows and Dam-Break Floods

Chen

Ruan²,

Chen³

et al. 2022

Front. Earth Sci.

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“…Iranmanesh and Passandideh-Fard (2017) studied numerically the feasibility of using a submerged cylinder as a mitigation device to absorb the kinetic energy of water sloshing in a container undergoing a constant and variable excitation. Celis et al (2017) analyzed the behavior of confined water and airflows in a partially filled tank. The effect of anti-slosh baffles on free liquid oscillations depends on the baffle installation position that has distinct effects on the sloshing frequencies and the associated hydrodynamic pressure fields.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Reduction of the Sloshing Phenomena Due To Sudden Movement of Spray Mixture Tanker

Micheli

Fogal

Scalon

et al. 2022

JAFM

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The sloshing phenomenon occurs in partially filled tankers due to sudden movement can affect the tank structure integrity and impair the dynamic stability of the tanker. The effects of sloshing phenomena in a spray mixture tank due to acceleration or deceleration of the agricultural vehicle is investigated under three filling levels of 25%, 50%, and 75%. The pressure time distributions on the tank wall were evaluated by using a multiphase transient model (water and air as an ideal gas) and a free surface flow in a homogeneous model. It was possible to verify the wave behavior of sloshing. The condition of 75% tank filling volume generated the highest pressure on the tank wall. The effectiveness of two types of vertical baffles in suppressing pressure was numerically investigated. Shear stress on the tank bottom wall under these proposed arrangements was analyzed by steady-state models and mechanical agitation, considering a filled tank. The proposed solution based on two partial vertical baffles and a central gap was the most effective. It promotes the higher reduction of wall impact pressure and other sloshing instabilities and maintains similar results of mixture agitation of the tank without baffles.

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“…et al studied uncertainty analysis of river flooding and dam failure risks using local sensitivity computations [18]; M.A.C. Celis et al calculated the dam-break process by numerical simulation [19]; Abdalla et al proposed a GIS-supported fuzzy-set approach for flood risk assessment [20]; Hongbo Ma et al studied a real time prediction approach for floods caused by failure of natural dams due to overtopping [21]; Becker et al studied flood disaster management in central Europe [22]; and other scholars have also conducted a series of related researches [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Study on Risk Assessment and Early Warning of Flood-Affected Areas when a Dam Break Occurs in a Mountain River

Fan

Tian

Wang

2018

Water

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Under the influence of extreme weather conditions or other unfavorable factors, if a dam break occurs in a mountain river, it will cause a great number of casualties and property losses in the affected downstream areas. Usually, early warning of the affected areas downstream of the dam depends mainly on qualitative evaluation and cannot be quantitatively evaluated. Based on the authors’ calculation of floods for many years, this study presents a quantitative assessment method for flood risk. The Ertan Hydropower Station in Southwest China and the flood-affected areas were chosen as the object of this study. Based on field surveys, research literature data, and the authors’ calculations, the basic data of the Ertan Hydropower Station and the calculation results of the dam break were obtained, and 35 representative flood-affected areas were selected to study risk assessment and early warning. The fuzzy analytic hierarchy process (FAHP) was used to build a mathematical model for quantitative analysis. The population, flood arrival time, flood level, evacuation time, and local GDP (Gross Domestic Product) were selected as five typical evaluation factors. Finally, this study calculated and counted the risk level of 35 representative flood-affected areas, and the study results were applied to Quxue and Guanmaozhou Hydropower Station.

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Numerical simulation of dam breaking and the influence of sloshing on the transfer of water between compartments

Cited by 13 publications

References 15 publications

Review of Investigations on Hazard Chains Triggered by River-Blocking Debris Flows and Dam-Break Floods

Review of Investigations on Hazard Chains Triggered by River-Blocking Debris Flows and Dam-Break Floods

Analysis and Reduction of the Sloshing Phenomena Due To Sudden Movement of Spray Mixture Tanker

Study on Risk Assessment and Early Warning of Flood-Affected Areas when a Dam Break Occurs in a Mountain River

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