Now showing items 1-13 of 13

    • Analysis of the longitudinal distribution of pressures near the ends of the vertical and horizontal faces in stepped spillway of slope 1V: 0.75H 

      Teixeira, Eder Daniel; Marques, Marcelo Giulian; Osmar, Fabrício Machado; Canellas, Alba Valéria Brandão; Saraiva, Lorena Silva; Priebe, Priscila dos Santos (2018) [Journal article]
      Stepped spillways have been widely used for flood runoff due to of their constructive advantages and in regards to energy dissipation during the drop, allowing downstream dissipation structures to be designed in smaller ...
    • Avaliação das Flutuações de Pressão em Ressalto Hidráulico pela Dissociação de Esforços 

      Prá, Mauricio Dai; Teixeira, Eder Daniel; Marques, Marcelo Giulian; Priebe, Priscila dos Santos (2016) [Journal article]
      O ressalto hidráulico é um fenômeno muito utilizado para dissipar energia a jusante de estruturas hidráulicas em virtude das suas características bifásicas e macroturbulentas, associadas a intensas flutuações de pressão, ...
    • Características das flutuações de pressão a jusante de dissipadores tipo concha com ângulo de 45º 

      Prá, Mauricio Dai; Teixeira, Eder Daniel; Marques, Marcelo Giulian; Canellas, Alba Valéria Brandão; Martinez, Carlos Barreira (2016) [Journal article]
      Este artigo apresenta um estudo sobre a distribuição de flutuação de pressão a jusante de dissipadores de energia hidráulica tipo concha em 12 diferentes geometrias. Foram avaliados dados resultantes de 78 ensaios, com ...
    • Experimental study of pressure flushing of non-cohesive sediment through slotted pipe bottom outlet 

      Paulo, Felipe Azevedo; Abreu, Aline Saupe; Prá, Mauricio Dai; Endres, Luiz Augusto Magalhães; Ferla, Rute; Teixeira, Eder Daniel (2021) [Journal article]
      Among several techniques for prevention and mitigation of reservoir sedimentation, bottom outlets arise as a means of removing sediment deposited close to the dam. Given the reduced sediment removal provided by traditional ...
    • Extreme pressure forecasting methodology for the hydraulic jump downstream of a low head spillway 

      Hampe, Roberta Ferrão; Steinke Júnior, Renato; Prá, Mauricio Dai; Marques, Marcelo Giulian; Teixeira, Eder Daniel (2020) [Journal article]
      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, understanding and predicting these efforts are crucial for the safe and ...
    • Longitudinal distribution of extreme pressures in a hydraulic jump downstream of a stepped spillway 

      Novakoski, Carolina Kuhn; Hampe, Roberta Ferrão; Conterato, Eliane; Marques, Marcelo Giulian; Teixeira, Eder Daniel (2017) [Journal article]
      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 action of the turbulent flow to which they are subject to. The combination ...
    • Macro-turbulent characteristcs of pressures in hydraulic jump formed downstream of a stepped spillway 

      Novakoski, Carolina Kuhn; Lima, Guilherme Abud; Conterato, Eliane; Marques, Marcelo Giulian; Mees, Alexandre Augusto Alves; Teixeira, Eder Daniel (2017) [Journal article]
      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 phenomenon that causes large pressure fluctuation in the stilling basin ...
    • Predictive modeling the free hydraulic jumps pressure through advanced statistical methods 

      Mousavi, Seyed Nasrollah; Teixeira, Eder Daniel; Steinke Júnior, Renato; Bocchiola, Daniele; Nabipour, Narjes; Mosavi, Amir; Shamshirband, Shahabodin (2020) [Journal article]
      Pressure fluctuations beneath hydraulic jumps potentially endanger the stability of stilling basins. This paper deals with the mathematical modeling of the results of laboratory-scale experiments to estimate the extreme ...
    • Reduced hydraulic model of Forquilha IV tailings dam 

      Teixeira, Eder Daniel; Franca, Paulo Ricardo Behrens; Viana, Edna Maria de Faria; Faria, Marco Tulio Correa de; Saliba, Aloysio Portugal Maia; Martinez, Carlos Barreira (2015) [Journal article]
      This paper presents the development of a reduced hydraulic model (RHM) for the outflow operating system at the Forquilha IV (scale 1:10) tailings dam, owned by Vale S.A. The studies were performed by Centro de Pesquisas ...
    • Start position of a sloping hydraulic jump 

      Wiest, Rafael André; Steinke Júnior, Renato; Prá, Mauricio Dai; Marques, Marcelo Giulian; Teixeira, Eder Daniel; Saliba, Aloysio Portugal Maia (2020) [Journal article]
      Although sloping hydraulic jumps are frequent in energy dissipators, there are few studies regarding this type of phenomenon. Since the jump is accompanied by violent impacts and sudden variations of velocity and pressure, ...
    • Stepped spillways with aerators : hydrodynamic pressures and air entrainment 

      Ferla, Rute; Novakoski, Carolina Kuhn; Priebe, Priscila dos Santos; Prá, Mauricio Dai; Teixeira, Eder Daniel; Marques, Marcelo Giulian (2021) [Journal article]
      The possibility of damage due to the phenomenon of cavitation leads the design of stepped spillways considering maximum specific discharges of 15 to 30 m2/s, a limit considerably lower than that practiced on smooth chutes. ...
    • Stepped spillway with pre-aeration by a deflector: flow characteristics 

      Novakoski, Carolina Kuhn; Ferla, Rute; Pra, Monica Dai; Canellas, Alba Valéria Brandão; Marques, Marcelo Giulian; Teixeira, Eder Daniel (2020) [Journal article]
      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 to a restrict range of specific discharges due to the risk of cavitation ...
    • Surface drainage system for dry docks in shipyards : case study of Estaleiro Rio Grande (Technical Note) 

      Teixeira, Eder Daniel; Marques, Marcelo Giulian; Saliba, Aloysio Portugal Maia; Martinez, Carlos Barreira; Resende, Márcio Figueiredo de (2016) [Journal article]
      This study aims to present a methodology for the design of a surface drainage system for dry docks in shipyards, taking into account the rainfall intensity at the site, the damping capacity of the hydraulic structures ...