Search Results - "Teixeira, Eder Daniel"
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Extreme Pressures and Risk of Cavitation in Steeply Sloping Stepped Spillways of Large Dams
Published in Water (Basel) (01-02-2022)“…Stepped spillways have been increasingly used to handle flood releases from large dams associated with hydropower plants, and it is important to evaluate the…”
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2
Submerged hydraulic jump: a computational analysis in different scales
Published in Revista brasileira de recursos hídricos (01-01-2024)“…ABSTRACT Advancements in computational capabilities have enabled engineers and scientists to numerically model complex turbulent phenomena such as hydraulic…”
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3
Hydrodynamic pressures on a stepped spillway with an aerator system subjected to different air flow rates
Published in Revista brasileira de recursos hídricos (01-01-2023)“…ABSTRACT Aerator systems promote additional insertion of air into the flow and can reduce the risk of cavitation and consequent damage to hydraulic structures…”
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4
Analysis of hydraulic parameters in determining the occurrence of cavitation in the spillways of the Furnas, Luiz Carlos Barreto de Carvalho and Batalha hydroelectric power plants
Published in Revista brasileira de recursos hídricos (01-01-2024)“…ABSTRACT The hydrodynamic conditions to which hydraulic structures such as spillways and stilling basins of dams are submitted under given conditions favor the…”
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5
Turbulent pressures at the position of maximum pressure fluctuation in hydraulic jump stilling basins
Published in Revista brasileira de recursos hídricos (01-01-2023)“…ABSTRACT Turbulent flow is responsible for a significant portion of damages and failures in dams. This paper sought to introduce novel approaches to the…”
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6
Proposal to use new methods of design and construction in mobile riverbed physical models: the Salto do Paraopeba dam case
Published in Revista brasileira de recursos hídricos (01-01-2023)“…ABSTRACT The study of the interaction between hydraulic structures in mobile bed river systems is complex because it involves sediment transport and dynamic…”
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7
Predictive Modeling the Free Hydraulic Jumps Pressure through Advanced Statistical Methods
Published in Mathematics (Basel) (01-03-2020)“…Pressure fluctuations beneath hydraulic jumps potentially endanger the stability of stilling basins. This paper deals with the mathematical modeling of the…”
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8
Stepped spillways with aerators: hydrodynamic pressures and air entrainment
Published in Revista brasileira de recursos hídricos (01-01-2021)“…ABSTRACT The possibility of damage due to the phenomenon of cavitation leads the design of stepped spillways considering maximum specific discharges of 15 to…”
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9
Dam-Break analysis: proposal of a simplified approach
Published in Revista brasileira de recursos hídricos (01-01-2021)“…ABSTRACT Simplified methods are useful alternatives for prior analysis of the effects of dam rupture and can guide the decision-making process for carrying out…”
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10
Influence of aeration induced by piers on the starting position of the flow aeration and extreme pressures in stepped spillways
Published in Revista brasileira de recursos hídricos (01-01-2021)“…ABSTRACT The operation of stepped spillways is limited by a range of discharges due to the risk of occurrence of the cavitation phenomenon and erosion on its…”
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11
Experimental study of pressure flushing of non-cohesive sediment through slotted pipe bottom outlet
Published in Revista brasileira de recursos hídricos (01-01-2021)“…ABSTRACT Among several techniques for prevention and mitigation of reservoir sedimentation, bottom outlets arise as a means of removing sediment deposited…”
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12
Extreme pressure forecasting methodology for the hydraulic jump downstream of a low head spillway
Published in Revista brasileira de recursos hídricos (2020)“…ABSTRACT Extreme pressures in the hydraulic jump are associated with risk of damage to the flow discharge system of dams by a series of mechanisms. Therefore,…”
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13
Stepped spillway with pre-aeration by a deflector: flow characteristics
Published in Revista brasileira de recursos hídricos (01-01-2020)“…ABSTRACT Stepped spillways aim to dissipate part of the upstream energy during the flow passage by the chute. However, the use of these structures is limited…”
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14
Start position of a sloping hydraulic jump
Published in Revista brasileira de recursos hídricos (01-01-2020)“…ABSTRACT Although sloping hydraulic jumps are frequent in energy dissipators, there are few studies regarding this type of phenomenon. Since the jump is…”
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15
Longitudinal distribution of extreme pressures in a hydraulic jump downstream of a stepped spillway
Published in Revista brasileira de recursos hídricos (01-01-2017)“…ABSTRACT The overflow system of a dam safely controls the water level of a reservoir. The design of these structures should predict the damage caused by the…”
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16
Macro-turbulent characteristcs of pressures in hydraulic jump formed downstream of a stepped spillway
Published in Revista brasileira de recursos hídricos (2017)“…ABSTRACT Stilling basins are structures built at the base of the spillway to dissipate energy, by means of a hydraulic jump. Hydraulic jump is a turbulent…”
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17
Analysis of the longitudinal distribution of pressures near the ends of the vertical and horizontal faces in stepped spillway of slope 1V: 0.75H
Published in Revista brasileira de recursos hídricos (01-01-2018)“…ABSTRACT Stepped spillways have been widely used for flood runoff due to of their constructive advantages and in regards to energy dissipation during the drop,…”
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18
Avaliação das Flutuações de Pressão em Ressalto Hidráulico pela Dissociação de Esforços
Published in Revista brasileira de recursos hídricos (01-03-2016)“…RESUMO O ressalto hidráulico é um fenômeno muito utilizado para dissipar energia a jusante de estruturas hidráulicas em virtude das suas características…”
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Características das flutuações de pressão a jusante de dissipadores tipo concha com ângulo de 45º
Published in Revista brasileira de recursos hídricos (01-03-2016)“…RESUMO Este artigo apresenta um estudo sobre a distribuição de flutuação de pressão a jusante de dissipadores de energia hidráulica tipo concha em 12…”
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