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DHA/NRE - Comunicações a congressos e artigos de revista: Recent submissions

Now showing items 41-60 of 458

Efeito de pequenos açudes nos movimentos das espécies ciprinícolas potamódromas

Amaral, S.D.; Branco J P; QUARESMA, A. L.; ROMÃO, F.; Viseu, T.; Ferreira, T.; Pinheiro, A.; Santos, J. (APRH, 2021-03)

A fragmentação dos cursos de água, imposta pela presença de diversas infraestruturas hidráulicas, é considerada como uma das principais causas de degradação dos habitats aquáticos. Conforme o estabelecido na Diretiva Quadro ...
Assessing the flow field around an oblong bridge pier. Vectrino acquisition time sensitivity analysis

Bento, A. M.; Pêgo, J. P.; Couto, L. T.; Viseu, T. (Institute of Geophysics, Polish Academy of Sciences, 2021-04)

Local scour has been widely identified as one of the primary threats to bridge pier stability. To better understand how the turbulent flow field modified by bridge piers interacts with the bed surface, it is relevant to ...
Experimental Characterization of the Flow Field around Oblong Bridge Piers

Bento, A. M.; Viseu, T.; Pêgo, J. P.; Couto, L. T. (MDPI, 2021-10-20)

The prediction of scour evolution at bridge foundations is of utmost importance for engineering design and infrastructures’ safety. The complexity of the scouring inherent flow field is the result of separation and ...
The Rich Diversity of Urban Allotment Gardens in Europe: Contemporary Trends in the Context of Historical, Socio-Economic and Legal Conditions

Ponizy, L.; Latkowska, M.; Breuste, J.; Hursthouse, A.; Joimel, S.; Külvik, M.; Leitão, T. E.; Mizgajski, A.; Voigt, A.; Kacprzak, E.; Mackiewicz, B.; Szczepańska, M. (MDPI, 2021-10-07)

Urban allotment gardens (AGs) provide a unique combination of productive and recre- ational spaces for the inhabitants of European cities. Although the reasons behind the decision to have a plot, as well as the mode of ...
Turbulent Flow Structure in a Confluence: Influence of Tributaries Width and Discharge Ratios

Alizadeh, L.; Fernandes, J. N. (MDPI, 2021-02-11)

River channel confluences are rather important interfaces where intense changes in physical, mixing and sediment transport processes occur. Following an experimental campaign, the main flow mechanisms in confluences and ...
Effect of a Submerged Vane-Field on the Flow Pattern of a Movable Bed Channel with a 90º Lateral Diversion

Baltazar, J.; Alves, E.; Bombar, G.; Cardoso, A. H. (MDPI, 2021-03-18)

This laboratory study focused on the effect of a submerged vane-field on the flow pattern and bed morphology near and inside the entrance reach of a movable bed 90 lateral diversion. The system was modelled under live ...
Apparent roughness coefficient in overbank flows

Fernandes, J. N. (SPRINGER NATURE, 2021-06-10)

Overbank flows occur in alluvial valleys during flood events when the conveyance of main channel of rivers is exceeded. Once floodplains are inundated and the so-called compound channel flow is observed, the faster flow ...
Sensitivity analysis of a simplified precipitation-runoff model to estimate water availability in Southern Portuguese watersheds.

Martins, T.; Oliveira, M. M.; Portela, M. M.; Leitão, T. E. (PAGEPress, 2021-06-30)

The water availability estimation in large regions is a relevant procedure to define broad water resources management policies but may prove difficult due to the lack of data and uncertainty to related regional hydrological ...
Is the Volume-of-Fluid Method Coupled with a Sub-Grid Bubble Equation Efficient for Simulating Local and Continuum Aeration?

Mendes, L. S.; Lara, J. L.; Viseu, T. (MDPI, 2021-05-29)

Air entrainment is common in free surface flows in large hydraulic structures (e.g., spillways, chutes, energy dissipation structures) and must be considered to assure an effective and safe operation. Due to the large ...
Tendências em séries de precipitação a diferentes escalas temporais na Ilha da Madeira (1937/38 a 2016/17)

Espinosa L. A.; Portela, M. M.; Rodrigues, R. (APRH, 2021-03)

Apresentam-se alguns dos resultados de uma análise de tendências da precipitação na Ilha da Madeira efetuada tendo por base séries de precipitação a diferentes escalas temporais constituídas a partir das precipitações ...
Gestão do risco na adaptação às alterações climáticas. O exemplo do Baixo Tejo

Rocha, F.; Viseu, T.; Luis, A.; Martins, B.; FREITAS, A.; BRITO, P. (APRH, 2021-03)

O projeto BINGO, cujo objetivo principal consistiu na definição de estratégias para a adaptação às alterações climáticas, centradas na gestão dos recursos hídricos, teve como caso de estudo nacional o baixo Tejo, mais ...
Evaluation of the scs-curve number distribution in southern portuguese watersheds

Martins, T.; Oliveira, M. M.; Portela, M. M.; Leitão, T. E. (APRH, 2021-03)

Basedin anaggregated large-scale vectorized soil and land cover datasetsa new map was generatedwith the spatial distribution of the Soil Conservation Service Curve Number in the southernregion of Portugal. ...
Large scale physical model experiments to improve water quality using soil-aquifer-treatment (SAT-MAR)

Leitão, T. E.; Martins, T.; Henriques, M. J. A.; Lobo Ferreira, J. P. C. (APRH, 2021-03)

The use of Soil-Aquifer Treatment (SAT) systems to improve the effluents water quality during the transport of infiltrated water through the unsaturated and saturated zones canbe a solution for water reclamation, ...
Modelação da bacia hidrográfica do rio Nabão com o Modelo Mike Zero

VALENTE, S.; Amaral, S.; Rodrigues, R.; Viseu, T. (APRH, 2021-03)

Neste estudo procedeu-se à modelação precipitação-escoamento da bacia hidrográfica do Rio Nabão aplicando o software de gestão dos recursos hídricos MIKE Zero(DHI).Neste trabalho apresentam-se as fases de calibração, ...
Determinação dos limites de passagem do barbo ibérico em dispositivos de passagem para peixes de fendas verticais

Simão, J.; ROMÃO, F.; QUARESMA, A. L.; BRAVO-CÓRDOBA, F. J.; Viseu, T.; SANZ-RONDA, F. J.; Pinheiro, A. (APRH, 2021-03)

A construção de açudes e barragens fragmenta a conectividade longitudinal dosrios, impossibilitandoa passagem de peixes e outros organismos aquáticos. As passagenspara peixes(PPP)são estruturas hidráulicas ...
Hydrogeochemistry and isotope compositions of multi-layered aquifer systems in the Recife Metropolitan Region, Pernambuco (NE Brazil): An integrated approach using multivariate statistical analyses

Silva, T. R.; Leitão, T. E.; Lima, M. M. C.; Martins, T.; Oliveira, M. M.; Albuquerque, M. S. C.; Duarte Costa, W. (Elsevier, 2021-04)

The Paraíba and Pernambuco basins are part of the Northeast Brazilian rift system, which contains a series of Cretaceous terrestrial to marine sediments covered by Neogene-Quaternary deposits. Their main aquifers ...
Low Froude Number Stilling Basins—Hydrodynamic Characterization

Steinke Jr., R.; Dai Prá, M.; Lopardo, R. A.; Marques, M. G.; Melo, J.; Priebe, P. S.; Teixeira, E. D. (Asce Library, American Society of Civil Engineers, 2021-01)

Hydraulic jumps, frequently present in energy dissipation structures, have been thoroughly investigated over the past 70 years. However, studies have focused primarily on the more common and more stable cases of large ...
Precipitation pattern changes impact in the groundwater quality at aluviões do Tejo aquifer

Leitão, T. E.; Henriques, M. J. A. (IWRA, 2020-10)

In order to assess the potential impact that climate changes might have in the future groundwater chemistry, the objective of this study was to evaluate how has the past decade 2000-2009 climatic variations affected the ...
Turbulent flow structure in a vegetated non-prismatic compound channel

Mehraban, F. V.; Mohammadi, M. M.; Ayyoubzadeh, S. A.; Fernandes, J. N.; Ferreira, R. L. (wiley online library, 2020-11)

The presence of vegetation on the floodplains of compound channels affects the structure of mean flow, increases flow resistance and turbulence intensity, and impacts sediment transport. In prismatic compound channels, the ...
Designing Experiments to Study Dam Breach Hydraulic Phenomena

Amaral, S.; Caldeira, L.; Viseu, T.; Ferreira, R. L. (ASCE - American Society of Civil Engineers, 2020-04)

The success of experimental studies to investigate hydraulics of dam breaching requires an adequate specification of geotechnical parameters and control over its realization in field or in laboratory conditions. Although ...

Now showing items 41-60 of 458

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