Navegação Engenharias por Autor "Canellas, Alba Valéria Brandão"

Resultados 1-6 de 6

    • 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) [Artigo de periódico]
      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 ...

    • 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) [Artigo de periódico]
      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 ...

    • 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 ...

    • 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 ...

    • Scale effect on mean pressures : study of two reduced models of a ski jump spillway 

      Borja, João Gerdau de; Sanagiotto, Daniela Guzzon; Marques, Marcelo Giulian; Canellas, Alba Valéria Brandão; Palauro, Cassius (2019) [Artigo de periódico]
      The ski jump type spillway is present in large Brazilian dams. After the operation of this type of spillway, a scour hole is originated downstream of the spillway toe, complementing the energy dissipation system, because ...

    • 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 ...