Numerical investigation on radial impeller induced vortex rope in draft tube under partial load conditions
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-017-1217-7
Abstract: The vortex rope phenomena appearing in a draft tube under partial load operations were investigated. The efforts were carried out by using a homogeneous equilibrium vapor-liquid two-phase model and a blending SST turbulence model, and… read more here.
Keywords: radial impeller; vortex rope; partial load; tube partial ... See more keywords
Numerical Simulation and Validation of a High Head Model Francis Turbine at Part Load Operating Condition
Sign Up to like & getrecommendations! Published in 2018 at "Journal of The Institution of Engineers (India): Series C"
DOI: 10.1007/s40032-017-0380-z
Abstract: Hydraulic turbines are operated over an extended operating range to meet the real time electricity demand. Turbines operated at part load have flow parameters not matching the designed ones. This results in unstable flow conditions… read more here.
Keywords: frequency; part load; draft tube;
Hydrodynamic behavior of silicon particles with a wide size distribution in a draft tube spout-fluid bed
Sign Up to like & getrecommendations! Published in 2017 at "Chemical Engineering Journal"
DOI: 10.1016/j.cej.2017.07.071
Abstract: Abstract An experimental study on the hydrodynamic behavior of silicon particles with a wide size distribution in a draft tube spout-fluid bed was performed in a 182 diameter cylindrical column with a flat gas distributor.… read more here.
Keywords: gas velocity; velocity; draft tube;
Crystallization kinetics in an airlift and a stirred draft tube crystallizer; Secondary nucleation models revisited
Sign Up to like & getrecommendations! Published in 2018 at "Chemical Engineering Research and Design"
DOI: 10.1016/j.cherd.2018.08.015
Abstract: Abstract In this research, a process model has been developed for an airlift and compared with that of a draft tube stirred crystallizer to clarify the crystallization kinetics in this novel type of crystallizer. Recently… read more here.
Keywords: crystallizer; crystallization kinetics; draft tube; nucleation ... See more keywords
Failure analysis of casing of draft tube of turbine used in hydropower plant
Sign Up to like & getrecommendations! Published in 2017 at "Engineering Failure Analysis"
DOI: 10.1016/j.engfailanal.2017.08.002
Abstract: Abstract Corrosion of massive components used in hydropower plants causes considerable technical problems and economic losses. Due to the corrosive environment and strong dynamic loading, such components must meet high demands. Quality of the components… read more here.
Keywords: used hydropower; microscopy; analysis; casing draft ... See more keywords
Hydrodynamics and oxygen transfer characterization in a net draft tube airlift reactor with water-in-diesel microemulsion
Sign Up to like & getrecommendations! Published in 2018 at "Fuel Processing Technology"
DOI: 10.1016/j.fuproc.2017.11.027
Abstract: Abstract The objective of the present work was to characterize gas holdup ( e G ), volumetric oxygen mass transfer coefficient ( k L a ), and specific gas-liquid interfacial area ( a ) in… read more here.
Keywords: water; draft tube; hydrodynamics; water diesel ... See more keywords
Vortical structures and pressure pulsations in draft tube of a Francis-99 turbine at part load: RANS and hybrid RANS/LES analysis
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Heat and Fluid Flow"
DOI: 10.1016/j.ijheatfluidflow.2016.05.007
Abstract: Abstract Recognizing the limitations of the conventional linear-eddy-viscosity (LEVM) Reynolds-averaged Navier–Stokes (RANS) models to reproduce complex three-dimensional unsteady flows in hydraulic machinery, we performed a comparative assessment of a second-moment (Re-stress model, RSM) RANS closure… read more here.
Keywords: rans les; vortical structures; tube francis; pressure pulsations ... See more keywords
Fine particle flow pattern and region delimitation in fountain confined conical spouted beds
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Industrial and Engineering Chemistry"
DOI: 10.1016/j.jiec.2021.01.006
Abstract: Abstract A novel borescopic technique together with the monitoring of pressure fluctuation signals (power spectral distribution, PSD) has been used to track fine particles and characterize solid flow dynamics in fountain confined conical spouted beds.… read more here.
Keywords: spout; fountain confined; draft tube; particle ... See more keywords
Suspension quality and power consumption of the complex multiphase flow field in a draft-tube stirred reactor
Sign Up to like & getrecommendations! Published in 2020 at "Particuology"
DOI: 10.1016/j.partic.2020.10.008
Abstract: Abstract Experiment and simulation were used to study the flow fields of a liquid-solid-solid three-phase system in a draft-tube stirred reactor with a six-flat-bladed turbine impeller (BT) and a 45° pitched six-bladed upflow turbine impeller… read more here.
Keywords: suspension quality; tube; impeller; draft tube ... See more keywords
Modeling of particle velocities in an apparatus with a draft tube operating in a fast circulating dilute spout-fluid bed regime
Sign Up to like & getrecommendations! Published in 2017 at "Powder Technology"
DOI: 10.1016/j.powtec.2017.07.001
Abstract: Abstract The objective of this paper was to verify the applicability of the EE (Euler-Euler) model for the description of hydrodynamics of particle flow in an apparatus with circulating dilute spout-fluid bed, as well as… read more here.
Keywords: spout fluid; particle velocities; model; particle ... See more keywords
Comparative study on the hydrodynamics and mixing characteristics of a new-type particle mixer
Sign Up to like & getrecommendations! Published in 2018 at "Powder Technology"
DOI: 10.1016/j.powtec.2018.03.057
Abstract: Abstract The characteristics of particle flow and mixing have a considerable influence on mass and heat transfer, as well as product quality. In order to further enhance the particle mixing in an internally circulating fluidized… read more here.
Keywords: icfb mixer; hydrodynamics; particle; mixer ... See more keywords