Results 1 to 10 of about 321,911 (116)
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, Xiaobing Liu
exaly +3 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
Jurnal Teknik Mesin, 2023 A Microhydro Power Plant (MHP) with hydrocoil turbine in Sukajaya Lembang Village, Bandung, West Java, has been successfully designed. However, the velocity of the water flow after exiting the hydrocoil turbine is still relatively high, so there is still
Fahmi Hidayat +2 more
doaj +1 more source
Optimal Design of Double Stage Internal Loop Air-Lift Bioreactor
Energies, 2023 Biorefinery systems play a critical role in the transition towards a sustainable bioeconomy, and bioreactors are a key component in these systems.
Fernando Ramonet +2 more
doaj +1 more source
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 +1 more source
Suppressing the Vortex Rope Oscillation and Pressure Fluctuations by the Air Admission in Propeller Hydro-Turbine Draft Tube [PDF]
Journal of Applied Fluid Mechanics, 2023 For the purpose of automatic generation control (AGC), a portion of the propeller hydro-turbine units in China is adjusted to operate within a restricted range of 75%-85% load using computer-controlled AGC strategies.
H. Wu +9 more
doaj +1 more source
Improvement of hydro-turbine draft tube efficiency using vortex generator
Advances in Mechanical Engineering, 2015 Computational fluid dynamics simulation was employed in a hydraulic turbine (from inlet tube to draft tube). The calculated turbine efficiencies were compared with measured results, and the relative error is 1.12%.
Xiaoqing Tian +3 more
doaj +1 more source
Renmin Zhujiang, 2023 In order to explore the influence of the opening of the movable guide vane on the flow and pressure pulsation in the draft tube of the Francis turbine,the steady and unsteady numerical simulations were carried out by establishing a three-dimensional full-
REN Haibo, YU Bo, WANG Kui, WANG Luobin
doaj