Hydrodynamic modeling and morphological analysis of Lake Água Preta: one of the water sources of Belém-PA-Brazil

Holanda, Patrícia da Silva; Blanco, Cláudio José Cavalcante; Cruz, D. O. A.; Lopes, David Franco; Barp, Ana Rosa Baganha; Secretan, Yves

doi:10.1590/s1678-58782011000200001

Cited by 11 publications

(3 citation statements)

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“…An automatic procedure for data treatment in partitions' interfaces was used for the mesh generation of finite elements, which will be used to solve the 2-D Saint-Venant model with a drying/wetting capability to follow the shoreline evolution. Studies conducted by Blanco et al (2009), Barros et al (2011 and Holanda et al (2011) corroborate the efficiency of the model and its application. Topobathymetry data -1983 and2007 One of the main requirements for achieving satisfactory results through hydrodynamic models involves the quality of topobathymetric data.…”

Section: Methodssupporting

confidence: 53%

“…The model used in this paper was determined on the assumption that the lake's substrate is a mean of its granulometry. A reference to types of granulometry may be found in the work of Holanda et al (2011) from which data in Table 1 have been retrieved. Since the entire lake bed is represented by the percentages above, the Manning friction coefficient (n) is calculated by the following expression, d med is the average diameter of the particles making up the substrate.…”

Section: Methodsmentioning

confidence: 99%

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Hydrodynamic modeling and morphological analysis of lake Bolonha: a water source in Belém, Pará State, Brazil

et al. 2013

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ABSTRACT. Current paper's main contribution includes hydrodynamic modeling and morphological analysis of lake Bolonha which, along with lake Água Preta, makes up the Utinga watershed in Belém, Pará State, Brazil. Bathymetry of lake Bolonha was undertaken by digitalizing the data provided by COSANPA (the local Sanitation and Water Supply Company) dating back to 1983, and from a 2007 field study. Both bathymetries produced two terrain elevation models which were used for morphological analysis and hydrodynamic simulations. The morphological analysis showed that between 1983 and 2007, no significant relief changes occurred on the bottom of lake Bolonha, except for the formation of the outflow channels between the interconnecting channel and Bolonha Water Treatment Plant (WTP). The hydrodynamic model was able to simulate depths and velocities. The velocities, ranging between 1.8 and 9.0 cm s -1 , showed a subtle current between the outlet of the canal connecting the lakes Bolonha and Água Preta and the water intakes of the Bolonha and São Braz WTPs. This fact demonstrated that lake Bolonha reservoir is a passage for waters from lake Água Preta.Keywords: bathymetry, terrain elevation model, water treatment plants.Modelagem hidrodinâmica e análise morfológica do lago Bolonha: um dos mananciais de Belém, Estado do Pará, Brasil RESUMO. As principais contribuições do artigo são a modelagem hidrodinâmica e a análise morfológica do lago Bolonha, o qual juntamente com o lago Água Preta, forma o manancial do Utinga em Belém, Estado do Pará. A batimetria do Bolonha foi obtida através da digitalização de dados provenientes da COSANPA que datam de 1983 e do levantamento em campo realizado em 2007. As duas batimetrias originaram dois modelos de elevação de terreno, os quais serviram para análises morfológicas e simulações hidrodinâmicas. A análise morfológica demonstrou que, entre 1983 e 2007, não houve nenhuma mudança significativa do relevo de fundo do lago Bolonha, a não ser a formação de um canal entre a chegada das águas do lago Água Preta e a tomada d'água da ETA Bolonha. O modelo hidrodinâmico mostrou-se capaz de simular as profundidades e as velocidades. As velocidades, na faixa de 1.8 a 9.0 cm s -1 , mostraram uma sutil correnteza estabelecida entre a saída do canal interligando os lagos Bolonha e Água Preta e as captações das ETA Bolonha e São Braz, demonstrando que o lago Bolonha serve de passagem às águas provenientes do lago Água Preta.Palavras-chave: batimetria, modelo de elevação do terreno, estação de tratamento de água.

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Section: Methodssupporting

confidence: 53%

Section: Methodsmentioning

confidence: 99%

Hydrodynamic modeling and morphological analysis of lake Bolonha: a water source in Belém, Pará State, Brazil

et al. 2013

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“…The finite element mesh stores all of the input variables needed for the resolution of St-Venant equations, as well as the resulting variables for the 2D flow simulation (water level and velocities). The advantage of using this software is its simplicity in terms of data requirements and most particularly the possibility of modifying the river geometry, qualities that have been demonstrated in several flood inundation studies [68,69].…”

Section: Hydraulic Model Of the Richelieu Rivermentioning

confidence: 99%

Uncertainty Analysis of a Two-Dimensional Hydraulic Model

Oubennaceur

Chokmani

Nastev

et al. 2018

Water

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Abstract:A reliability approach referred to as the point estimate method (PEM) is presented to assess the uncertainty of a two-dimensional hydraulic model. PEM is a special case of numerical quadrature based on orthogonal polynomials, which evaluates the statistical moments of a performance function involving random variables. When applied to hydraulic problems, the variables are the inputs to the hydraulic model, and the first and second statistical moments refer to the mean and standard deviation of the model's output. In providing approximate estimates of the uncertainty, PEM appears considerably simpler and requires less information and fewer runs than standard Monte Carlo methods. An example of uncertainty assessment is shown for simulated water depths in a 46 km reach of the Richelieu River, Canada. The 2D hydraulic model, H2D2, was used to solve the shallow water equations. Standard deviations around the mean water depths were estimated by considering the uncertainties of three main input variables: flow rate, Manning's coefficient and topography. Results indicate that the mean standard deviation is <27 cm for the considered flow rates of 759, 824, 936, 1113 m 3 /s. Higher standard deviations were obtained upstream of the topographic shoal at the municipality of Saint-Jean-sur-Richelieu. The PEM method adds further value to the H2D2 model predictions as it indicates the magnitude and the spatial variation in uncertainties. The effort required to complete an uncertainty analysis using the PEM method is minimal and the resulting insight is meaningful. This knowledge should be incorporated into decision-making in the context of flood risk assessment.

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Hydrodynamic and Water Quality Modeling of Lake Mariout (Nile Delta, Northern Egypt)

El-Naggar

Rifaat

2017

The Handbook of Environmental Chemistry

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Hydrodynamic modeling and morphological analysis of Lake Água Preta: one of the water sources of Belém-PA-Brazil

Cited by 11 publications

References 9 publications

Hydrodynamic modeling and morphological analysis of lake Bolonha: a water source in Belém, Pará State, Brazil

Hydrodynamic modeling and morphological analysis of lake Bolonha: a water source in Belém, Pará State, Brazil

Uncertainty Analysis of a Two-Dimensional Hydraulic Model

Hydrodynamic and Water Quality Modeling of Lake Mariout (Nile Delta, Northern Egypt)

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