Results 11 to 20 of about 474,588 (344)

Experiments and modelling of a draft tube airlift reactor operated at high gas throughputs [PDF]

open access: yes, 2012
One-dimensional modelling of global hydrodynamics and mass transfer is developed for an annulus sparged draft tube airlift reactor operating at high gas throughputs.
Cockx, Arnaud   +3 more
core   +8 more sources

PENENTUAN JENIS DRAFT TUBE BERDASARKAN NILAI HEAD RECOVERY DAN KINERJA TURBIN HYDROCOIL MENGGUNAKAN METODE COMPUTATIONAL FLUID DYNAMICS

open access: yesJurnal 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

Suppressing the Vortex Rope Oscillation and Pressure Fluctuations by the Air Admission in Propeller Hydro-Turbine Draft Tube [PDF]

open access: yesJournal 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

Optimal Design of Double Stage Internal Loop Air-Lift Bioreactor

open access: yesEnergies, 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

Draft genome sequence of methicillin-resistant Staphylococcus epidermidis strain ET-024, isolated from an endotracheal tube biofilm of a mechanically ventilated patient [PDF]

open access: yes, 2014
Staphylococcus epidermidis strain ET-024 was isolated from a biofilm on an endotracheal tube of a mechanically ventilated patient. This strain is resistant to methicillin and the draft genome sequence shares some characteristics with other nosocomial S ...
Coenye, Tom   +4 more
core   +2 more sources

Robust MPC for actuator-fault tolerance using set-based passive fault detection and active fault isolation [PDF]

open access: yes, 2014
In this paper, an actuator fault-tolerant control (FTC) scheme is proposed, which is based on tube-based model predictive control (MPC) and set-theoretic fault detection and isolation (FDI). As a robust MPC technique, tube-based MPC, can effectively deal
Niculescu, Silviu-Iulian   +4 more
core   +1 more source

Improvement of hydro-turbine draft tube efficiency using vortex generator

open access: yesAdvances 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

Investigation of Efficient Optimization Approach to the Modernization of Francis Turbine Draft Tube Geometry

open access: yesMathematics, 2022
The installation of new and revitalization of existing hydropower requires the optimal design of hydraulic turbine parts, which were previously mostly based on simplified analytical methods and engineering practices.
Ivana Lučin   +3 more
doaj   +1 more source

Unsteady numerical simulation of the flow in the U9 Kaplan turbine model [PDF]

open access: yes, 2014
The Reynolds-averaged Navier-Stokes equations with the RNG k-ε turbulence model closure are utilized to simulate the unsteady turbulent flow throughout the whole flow passage of the U9 Kaplan turbine model.
Javadi, Ardalan, Nilsson, Håkan
core   +1 more source

Analysis of Flow and Pressure Pulsation in Draft Tube of Francis Turbine under Different Guide Vane Opening

open access: yesRenmin 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  

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