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Scopus
ISSN 2318-0331 · Associação Brasileira de Recursos Hídricos · 545 artikel di indeks
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Artikel Jurnal Teks lengkap
Large Eddy Simulations of extreme pressures in low Froude number hydraulic jumps
Abstract This paper sought to assess the capability of the Large Eddy Simulation technique in reproducing the fluctuating pressures exerted on the slabs of hydraulic jump stilling basins. Using the volume-of-fluid (VOF) technique and the Smagorinsky model, three hydraulic conditions were simulated…
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Assessing the socioeconomic benefits of the Agreste Adduction System in Pernambuco, Brazil
ABSTRACT Government intervention in water infrastructure is justified where markets cannot ensure equitable, efficient provision of essential services. Water systems exhibit public goods and natural monopolies characteristics, limiting private incentives. High fixed costs and diffuse social…
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Improving planning and response to inland water oil spills through mathematical modeling
ABSTRACT This study evaluates oil spill emergency response strategies in inland waters through three-dimensional hydrodynamic modeling, using a 2015 accident at a large hydroelectric plant in the middle reach of the Iguaçu River (Brazil) as a reference case. The open-source DELFT3D model combined…
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A socio-hydrology approach to domestic organic pollutant load removal: duration curve analysis for enhancing water quality management
ABSTRACT Urban rivers are increasingly impacted by domestic pollution, mainly due to insufficient sewage treatment. In Brazil, this issue is addressed through Water Body Classification (WBC), a planning instrument that sets water quality goals and actions to achieve them. However, quantifying the…
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Simulation of aquifers under steady-state conditions using the Multi-Point Flux Approximation with Diamond Stencil (MPFA-D) method
ABSTRACT The simulation of groundwater flow in complex porous media requires sophisticated numerical methods capable of handling general geometries, strongly discontinuous and anisotropic coefficients, and ensuring local mass conservation. In this sense, we use for the first time, a finite volume…
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Hydrological-hydrodynamic modeling of climate-induced urban flooding of design storms using HydroPol2D: a case study in São Carlos, Brazil
ABSTRACT Under scenarios of climate change, the frequency and intensity of urban flood events are expected to increase, leading to more severe impacts in cities. Thus, coupling spatially distributed hydrological and hydrodynamic models is essential to simulate flood propagation and identify…
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Gray water footprint-based water quality sustainability indices: an innovative approach for river basins
ABSTRACT This study establishes a new methodology to calculate the dilution flow in water courses, proposing a Water Quality Sustainability Index (WSI) as a specific metric to assess the qualitative dimension of water sustainability from a pollution assimilation perspective. The objective of this…
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Hydrodynamic and oil dispersion modeling in the coastal zone of Fortaleza, Northeastern Brazil: a support tool for environmental management and contingency planning
ABSTRACT Oil spill accidents constitute a serious threat to coastal socio-ecological systems. This study assesses the applicability of computational modelling as a decision-support tool for port and environmental management and for the development of emergency response plans for spills in the…
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Historical and probabilistic estimation of frequency factors for the daily Probable Maximum Precipitation (PMP) in Minas Gerais, Brazil
ABSTRACT Extreme precipitation events directly affect public safety, infrastructure, and the economy, and are influenced by regional hydrometeorological conditions. In hydrology, design flows may be estimated using deterministic or probabilistic approaches. Under the statistical method, the…
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Probabilistic dam-breach flood mapping using full and truncated hydrodynamic models
ABSTRACT Flood modeling and mapping involve considerable uncertainties, particularly in dam-breach studies. To better account for these uncertainties, probabilistic flood-mapping approaches have been increasingly adopted as alternatives to traditional deterministic methods. This study aims to…
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Bias-corrected precipitation products in a data-scarce Andean basin: performance and parameter transferability
ABSTRACT Sparse monitoring networks and complex topography in mountainous regions reduce the reliability of precipitation records, limiting their use in hydrological and engineering analyses. In the tropical Andes, large-scale circulation patterns and strong orographic gradients amplify these…
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Multi-scenario risk assessment: an eighteen-hydrograph framework for dam spillway safety using copulas and integrating climate change
ABSTRACT This study proposes a procedure for dam spillway safety verification based on a set of design hydrographs and using advancements in statistical hydrology published in the last years. The approach uses the following steps: (1) using copulas to model the dependence between peak flow and…
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Effects of rotational speed on abrasion caused by Limnoperna fortunei in hydraulic labyrinths
ABSTRACT Limnoperna fortunei (golden mussel) causes impacts on hydroelectric plants, although its abrasive effects on hydraulic components remain poorly quantified. This study evaluated wear caused by shell fragments in Francis turbine labyrinth seals using an experimental apparatus simulating…
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Corrective smoothed particle method with velocity pre-smoothing and unsteady friction for analysis of hydraulic transients in closed-conduit pipes
ABSTRACT This research focuses on the analysis of transient flow in a horizontal copper pipe. Experimental data from a reservoir-pipe-valve copper pipe-rig was used. A hydraulic transient solver with mesh-based and meshfree methods incorporating friction losses has been developed. Numerical results…
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Revisiting the statistical method for estimating the Probable Maximum Precipitation (PMP): from theoretical concepts to a satellite-based spatial approach in the state of Minas Gerais
ABSTRACT Probable Maximum Precipitation (PMP) estimates have recently become a legal requirement for the design of high-hazard hydraulic structures in Brazil. However, the distinctions between the PMP concept and the available estimation models are not well understood by researchers and…
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Assessing temporal variability in water security across Brazil
ABSTRACT Water security is commonly analyzed by combining indicators representing human, economic, ecosystemic, and resilience dimensions. However, a comprehensive understanding of water security requires evaluating how these indicators evolve over time. Here, we combine three decades of Brazilian…
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Future droughts in the Paraíba do Sul River Basin, Brazil: climate model selection based on performance and multi-model projections
ABSTRACT The Paraíba do Sul River Basin plays a strategic role in southeast Brazil, supplying water to over 20 million people and supporting key metropolitan and industrial regions. This study assesses how drought frequency, duration, and severity may evolve in the basin during 2021-2060 (near- to…
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Optimal water tariffs and trade-offs: a multi-objective analysis of municipalities in Pernambuco
ABSTRACT This study evaluates a multi-objective optimization approach for determining potable water tariffs in response to new regulatory targets in Brazil’s sanitation sector. The model, applied to 172 municipalities in Pernambuco using 2010 data from a major water utility, was designed to…
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Energy efficiency in pumping systems at wastewater treatment plants: case study of the Barueri WWTP
ABSTRACT In wastewater treatment plants, energy costs account for approximately 50% of total operating costs, mainly due to the operation of compressors and pumps. In this context, this study proposes a mathematical and computational model applied to optimize the pumping operation in wastewater…
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Development of an upper envelope curve of frequency factors for Probable Maximum Precipitation (PMP) estimation in tropical regions under convective regimes: a deterministic approach
ABSTRACT This study revisits and adapts the Hershfield Statistical Method to estimate the point Probable Maximum Precipitation (PMP) for a tropical climate region in northern Brazil, focusing on durations from 24 hours to 30 days. To improve the representativeness of PMP estimates, regional upper…