Results 21 to 30 of about 474,588 (344)
Effect of draft tube diameter on nitrogen removal from domestic sewage in a draft tube type reactor
Water Science and Technology, 1998 The effect of the ratio of draft tube diameter to reactor diameter (Di/Do) on the efficiency of nitrogen removal from domestic sewage is discussed based on liquid-circulating flow rate and continuous treatment data. More than 2.5 minutes of circulation time in the annulus part, which is required to create an anoxic zone, could be maintained under ...
Yoshio Okuno +3 more
openaire +2 more sources
Computational fluid dynamics simulation and geometric design of hydraulic turbine draft tube
Advances in Mechanical Engineering, 2015 Any hydraulic reaction turbine is installed with a draft tube that impacts widely the entire turbine performance, on which its functions are as follows: drive the flux in appropriate manner after it releases its energy to the runner; recover the suction ...
JB Sosa +3 more
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Design and implementation of an ultrasonic sensor for rapid monitoring of industrial malolactic fermentation of wines [PDF]
, 2017 Ultrasound is an emerging technology that can be applied to monitor food processes. However, ultrasonic techniques are usually limited to research activities within a laboratory environment and they are not extensively used in industrial processes.
Amer Boixareu, Miguel Ángel +6 more
core +2 more sources