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Experimental and Numerical Simulation Study on the Flow Characteristics of the Draft Tube in Francis Turbine [PDF]
Machines, 2022 The flow characteristics of the draft tube of a Francis turbine have a significant influence on turbine stability. Numerical simulations were performed for a Francis turbine under three different output conditions of 20%, 100%, and 120% at the rated and ...
Lei Ji +7 more
doaj +2 more sources
Performance Characteristics in Draft Tube - A Review
Journal of Advanced Mechanical Sciences, 2022 The draft tube elbow was modelled using the fundamental geometry of GAMM Francis turbine. Its purpose was to design a draft tube with improved hydrodynamic performance This was accomplished by integrating unfasten resource and commercialized technologies
Arpit Pawar
doaj +2 more sources
Werle´–Legendre Separation in a Hydraulic Machine Draft Tube [PDF]
Journal of Fluids Engineering, 2002 The three-dimensional turbulent flow in a compact hydraulic machine elbow draft tube is numerically investigated for several operating conditions, covering an extended range around the best efficiency point. Comparisons with the experimental data are presented as validation.
Mauri, Sebastiano +2 more
openaire +4 more sources
Chlorella vulgaris cultivation in airlift photobioreactor with transparent draft tube: effect of hydrodynamics, light and carbon dioxide on biochemical profile particularly ω-6/ω-3 fatty acid ratio. [PDF]
J Food Sci Technol, 2020 Madhubalaji CK +4 more
europepmc +3 more sources
Particle Cycle Times in Draft Tube Conical Spouted Beds
Chemical Engineering Transactions, 2014 A hydrodynamic study of conical spouted beds equipped with draft tube has been carried out for glass beads. Runs have been carried out in conical spouted beds of different geometry according to a factorial design of experiments.
I. Estiati, H. Altzibar, M. Olazar
doaj +2 more sources
Hydrodynamics of a self-agitated draft tube airlift reactor [PDF]
Chemical Industry and Chemical Engineering Quarterly, 2014 The main hydrodynamic characteristics of a novel-constructed, self-agitated draft tube airlift reactor (DT-ALR) were investigated. Ten impellers, driven only by the means of gas throughput and induced liquid circulation, were inserted in the ...
Tekić Miodrag N. +6 more
doaj +3 more sources
Chemical Engineering Transactions, 2013 A hydrodynamic study of conical spouted beds equipped with draft tube has been carried out for Geldart group D particles. Based on a design of experiments, the performance of conical spouted beds provided with draft tube has been studied by measuring ...
H. Altzibar, I. Estiati, M. Olazar
doaj +2 more sources
Pressure Analysis in the Draft Tube of a Pump-Turbine under Steady and Transient Conditions
Energies, 2021 Pumped-storage power stations play a regulatory role in the power grid through frequent transition processes. The pressure pulsation in the draft tube of the pump-turbine under transient processes is important for safe operation, which is more intense ...
Jing Yang +3 more
doaj +1 more source
Energies, 2021 This paper proposes an original approach to investigate the influence of the geometry of Francis turbines draft tube on pressure fluctuations and energy losses in off-design conditions.
Arthur Favrel +3 more
doaj +1 more source
Prediction of the particle circulation rate in a draft tube spouted bed suspension dryer [PDF]
Journal of the Serbian Chemical Society, 2006 A model for predicting the particle circulation rate in a draft tube spouted bed dryer with inert particles is proposed and verified. The calculation algorithm requires three input values: the gas velocity in the draft tube one data point for the static ...
Arsenijević Zorana Lj. +2 more
doaj +3 more sources