Navegação Engenharias por Autor "Ferla, Rute"

Resultados 1-8 de 8

    • Dam-Break analysis : proposal of a simplified approach 

      Rossi, Carlo Lucca Coutinho Ungaretti; Marques, Marcelo Giulian; Teixeira, Eder Daniel; Melo, José Falcão; Ferla, Rute; Prá, Mauricio Dai (2021) [Artigo de periódico]
      Simplified methods are useful alternatives for prior analysis of the effects of dam rupture and can guide the decision-making process for carrying out more complete studies. In this context, a new simplified approach is ...

    • 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) [Artigo de periódico]
      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 pressures and risk of cavitation in steeply sloping stepped spillways of large dams 

      Novakoski, Carolina Kuhn; Ferla, Rute; Marques, Marcelo Giulian; Prá, Mauricio Dai; Canellas, Alba Valéria Brandão; Teixeira, Eder Daniel (2022) [Artigo de periódico]
      Stepped spillways have been increasingly used to handle flood releases from large dams associated with hydropower plants, and it is important to evaluate the fluctuating pressure field on the steps. Hydraulic model ...

    • Hydrodynamic pressures on a stepped spillway with an aerator system subjected to different air flow rates 

      Ferla, Rute; Novakoski, Carolina Kuhn; Castiglio, Guilherme Santanna; Prá, Mauricio Dai; Marques, Marcelo Giulian; Teixeira, Eder Daniel (2023) [Artigo de periódico]
      Aerator systems promote additional insertion of air into the flow and can reduce the risk of cavitation and consequent damage to hydraulic structures. This work analyzes the hydrodynamic pressures on the steps of a physical ...

    • Induced aeration flow over stepped spillways: mean pressures, air entrainment and flow behavior 

      Novakoski, Carolina Kuhn; Ferla, Rute; Priebe, Priscila dos Santos; Abreu, Aline Saupe; Marques, Marcelo Giulian; Dai Prá, Maurício; Canellas, Alba Valéria Brandão; Teixeira, Eder Daniel (2021) [Artigo de periódico]
      Stepped spillways can dissipate a great amount of energy during the flow passage over the chute, however these structures have limited operation due to the risk of cavitation damage. The induced aeration may protect the ...

    • Influence of aeration induced by piers on the starting position of the flow aeration and extreme pressures in stepped spillways 

      Priebe, Priscila dos Santos; Ferla, Rute; Novakoski, Carolina Kuhn; Abreu, Aline Saupe; Teixeira, Eder Daniel; Prá, Mauricio Dai; Marques, Marcelo Giulian (2021) [Artigo de periódico]
      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 steps. Since there is a demand for spillways with the possibility of ...

    • 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) [Artigo de periódico]
      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; Dai Prá, Maurício; Canellas, Alba Valéria Brandão; Marques, Marcelo Giulian; Teixeira, Eder Daniel (2020) [Artigo de periódico]
      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 ...