Results 31 to 40 of about 1,539,229 (306)
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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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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Application of a General Discrete Adjoint Method for Draft Tube Optimization
IOP Conference Series: Earth and Environment, 2021 Automatic optimization is becoming increasingly important in turbomachinery design to improve the performance of machine components and Evolutionary Algorithms (EAs) play a very important role in this task. The main drawback of EAs is the large number of
Benno Fleischli +7 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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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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Energies, 2021 The paper focuses on the influence of the reshaped elbow geometry of the draft tube on the unsteady pressure field under different operating conditions.
R. Szakal, Alex Doman, S. Muntean
semanticscholar +1 more source
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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Turbine Test Rig to Investigate Flow Instabilities in Draft Tube
, 2021 Time-dependent phenomena in a reaction turbine such as rotor-stator interactions (RSI) and rotating vortex rope (RVR) contribute to pressure fluctuations, vibrations, and even failure of the machine.
S. Kumar +3 more
semanticscholar +1 more source