Results 51 to 60 of about 98,469 (255)

On the scale-up criteria for bubble columns

open access: yesPetroleum, 2019
It is generally admitted that experimental data obtained in “laboratory-scale” bubble columns are representative of “industrial-scale” reactors if the well-known three “Wilkinson et al.
Giorgio Besagni   +2 more
doaj   +1 more source

Investigations in an external-loop airlift photobioreactor with annular light chambers and swirling flow [PDF]

open access: yes, 2011
Photosynthetic microorganisms could serve as valuable compounds, but also for environmental applications. Their production under controlled conditions implies to design specific reactors, named photobioreactors, in which light supply is the main ...
Aloui   +29 more
core   +2 more sources

The Bubble Shape in Contaminated Bubbly Flows: Results for Different NaCl Concentrations in Purified Water

open access: yesChemEngineering, 2018
The bubble shape influences the transfer of momentum and heat/mass between the bubble and the surrounding fluid as well as the flow field around the bubble.
Thomas Ziegenhein   +3 more
doaj   +1 more source

Impact of tangled magnetic fields on AGN-blown bubbles [PDF]

open access: yes, 2006
There is growing consensus that feedback from AGN is the main mechanism responsible for stopping cooling flows in clusters of galaxies. AGN are known to inflate buoyant bubbles that supply mechanical power to the intracluster gas (ICM).
Bruggen, M.   +4 more
core   +3 more sources

The pseudo-homogeneous flow regime in large-scale bubble columns: experimental benchmark and computational fluid dynamics modeling

open access: yesPetroleum, 2019
A precise prediction of the fluid dynamics in bubble columns is of fundamental importance to correctly design “industrial-scale” reactors. It is known that the fluid dynamics in bubble columns is related to the prevailing bubble size distribution ...
Giorgio Besagni   +3 more
doaj   +1 more source

Numerical simulation of small bubble-big bubble-liquid three-phase flows [PDF]

open access: yes, 2006
Numerical simulations of the small bubble-big bubble-liquid three phase heterogeneous flow\ud in a square cross-sectioned bubble column were carried out with the commercial CFD\ud package CFX-4.4 to explore the effect of superficial velocity and inlet ...
Deen, N.G., Kuipers, J.A.M., Zhang, D.
core   +1 more source

bubble column

open access: yes, 2014
Citation: 'bubble column' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.B00750 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms. Requests for commercial
openaire   +1 more source

Unified modeling of bubbly flows in pipes, bubble columns, and airlift columns

open access: yesChemical Engineering Science, 2017
Abstract Multiphase CFD simulation is a valuable tool in process engineering which is particularly useful to study new reactor concepts and their scale-up from laboratory to production scale. Simulations of bubbly flows up to industrial dimensions are feasible within the Eulerian two-fluid framework of interpenetrating continua.
Rzehak, R.   +4 more
openaire   +1 more source

Studies Pressure Drop of gas-Non-Newtonian Liquid Two Phase Flow in Bubble Column [PDF]

open access: yesEngineering and Technology Journal, 2009
An exclusive study has been done on experimental investigation of the two-phase flowpressure drop in an air-non-Newtonian liquid (CMC solutions) system in bubble column.The effects of gas and liquid flow rate on two-phase pressure drop have been ...
Ali H. Jawad
doaj   +1 more source

A computational review of various inter-facial forces in fully developed multiphase fluid under different flow patterns in vertical column

open access: yesPropulsion and Power Research
The main contribution of this work is a comprehensive overview of the many years of research on various inter-facial forces with distinct flow structure transitions in liquid-gas multiphase flow in vertical columns.
Faisal Shah, Desheng Zhang, Linlin Geng
doaj   +1 more source

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