Results 21 to 30 of about 304,926 (297)
MATEC Web of Conferences, 2017 The free discharge through the turbine is applied in the course of construction of hydro power plant or in case of excessive water inflow during floods or emergency situations.
Platonov Dmitry +2 more
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Energies, 2022 The vortex rope in the draft tube is considered as the major contributor to pressure pulsation at partial load (PL) conditions, which causes the hydro unit to operate unstably.
Zhumei Luo +4 more
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Numerical and Experimental Study on a Model Draft Tube with Vortex Generators
Advances in Mechanical Engineering, 2013 A model water turbine draft tube containing vortex generators (VG) was studied. Numerical simulations were performed to investigate 55 design variations of the vortex generators in a draft tube.
Tian Xiaoqing +3 more
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Revista Facultad de Ingeniería Universidad de Antioquia, 2013 Severe vibrations are present on the draft tube of a 95 MW hydraulic turbine operating at partial load. Frequent failures on structural elements of the power plant are produced, due to the hydraulic instability inside the draft tube; mainly when the ...
Fernando Casanova García +1 more
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CFD Modeling of Hydrocarbon-Air System Hydrodynamics in Three Types of Column Reactors [PDF]
Iranian Journal of Chemical Engineering, 2020 In this study, hydrodynamic characteristics such as gas holdup (ε), liquid phase velocity, and mass transfer coefficient (kLa) for air-diesel system were modeled for bubble column (BCR), airlift (ALR), and airlift with the net draft tube (ALR-NDT ...
H. Faraji, A.R. Habibi, E. Jalilnejad
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Flow Characteristics of Bulb Tubular Turbine Based on Solid-liquid Two-phase Flow Model [PDF]
Journal of Applied Fluid MechanicsThis study examines the operational efficiency of a bulb tubular turbine under solid-liquid two-phase (SLTP) flow conditions. By employing the Euler-Euler method, the characteristics of SLTP flow in the turbine with different solid particle diameters ...
Q. Li, F. Zhou, Q. Wang
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Two-Objective Optimization of a Kaplan Turbine Draft Tube Using a Response Surface Methodology
Energies, 2020 The overall cost of a hydropower plant is mainly due to the expenses of civil works, mechanical equipment (turbine and control units) and electrical components.
Riccardo Orso +4 more
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Advances in Mechanical Engineering, 2019 An improved method for preventing vortex rope formation and alleviating the associated pressure fluctuations in turbine draft tubes is investigated using baffles in the draft tube to hinder the swirling flow emerging from a Francis turbine runner.
Xing Zhou, He-gao Wu, Chang-zheng Shi
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Solid Cycle Times of Chickpeas in Draft Tube Conical Spouted Beds
Chemical Engineering Transactions, 2015 The growing demand for alternative energy sources has furthered the interest on biomass over the last decades. Thus, a hydrodinamic study of conical spouted beds equipped with draft tube has been carried out for biomass, specifically, chickpeas.
I. Estiati +3 more
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CFD Analysis of The Hydraulic Turbine Draft Tube to Improve System Efficiency
MATEC Web of Conferences, 2016 Demand of the power is increasing day by day with the development of the science and technology. Development of the renewable energy sector has become essential issue at the present situation due to the limited source of the non-renewable energy.
Chakrabarty Spandan +2 more
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