Results 21 to 30 of about 580 (146)

Identification method for flow pattern in upward pipe based on wavelet transform and neural network

open access: yesYou-qi chuyun, 2020
In order to realize the intelligent identification of gas-liquid two-phase flow patterns in upward pipes, the flow pattern identification method based on wavelet transform and probabilistic neural network was proposed.
Shuang LI, Yuxing LI, Dongxu WANG
doaj   +1 more source

Gas Holdup in Trayed Bubble Column Reactors

open access: yes, 2006
The Sectionalization of Conventional Bubble Columns by Perforated Trays into Trayed Bubble Columns (TBCs) Has Much Potential in Biochemical and Petroleum Refining Processes, as an Effective Way to Improve the Gas-Liquid Contacting Efficiency and Reduce ...
Al-Dahhan, Muthanna H., Alvaré, Javier
core   +1 more source

Gas holdup in a trayed cold-flow bubble column

open access: yes, 2001
An Experimental Study Was Performed to Investigate the Effect of Sieve Trays on the Time-Averaged Gas Holdup Profiles and the overall Gas Holdup in a Cold-Flow Bubble Column that Was Scaled-Down from a Commercial Unit.
Leib, T. M.   +15 more
core   +1 more source

Desenvolvimento e aplicações de um biorreator airlift com circulação externa [PDF]

open access: yes, 1997
Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro TecnologicoUm reator airlíft com circlação externa construído em vidro foi desenvolvido utilizando relações geométricas sugeridas na literatura e dados obtidos através de estudos ...
Pedrini, Márcia Regina da Silva
core  

Computational fluid dynamics investigation of gas–liquid two-phase flow in aerated stirred reactors

open access: yesEngineering Applications of Computational Fluid Mechanics
An extensive investigation of multiphase flow and mass transfer in aerated stirred reactors will provide methods for improving reactor performance. In this study, a computational fluid dynamics (CFD) model that characterizes gas–liquid two-phase flow in ...
Shaoqi Yu, Binxin Wu, Chun Wei
doaj   +1 more source

PBM-CFD Investigation of the Gas Holdup and Mass Transfer in a Lab-Scale Internal Loop Airlift Reactor

open access: yesIEEE Access, 2017
This paper investigated the problem of overall gas holdup and the oxygen mass transfer in the internal loop airlift reactor by numerical modeling and experimental validation.
Shuo Zhang   +3 more
doaj   +1 more source

Validation of Models to describe Local Transport Phenomena in Bubble Columns [PDF]

open access: yes, 2013
The purpose of this master thesis is to analyze existing models of gas hold-up and volumetric mass transfer. After extensive literature research, the models are quantitatively and qualitatively compared, underlining whether important aspects are ...
Nascimbeni, Emilio
core  

Local Gas Holdup Variation in a Fiber Slurry

open access: yes, 2005
Air−water−fiber flows are found in the pulp and paper industry in a variety of unit operations. Understanding the complex hydrodynamics found in such flows is beneficial to flotation deinking (i.e., a separation process found in paper recycling) and ...
Heindel, Theodore   +3 more
core   +1 more source

Defluoridation of Morocco drinking water by electrocoagulation/electroflottation in an electrochemical external-loop airlift reactor [PDF]

open access: yes, 2009
An innovative application of external-loop airlift reactors as electrocoagulation/electroflotation cells with Al electrodes for defluoridation of drinking water was developed.
Bennajah, Mounir   +4 more
core   +1 more source

Simulation of Oxygen Mass Transfer in an Internal Loop Airlift Reactor with Axial Dispersion Model

open access: yesAl-Khawarizmi Engineering Journal, 2011
The effect of superficial gas velocity within the range 0.01-0.164 m/s on gas holdup (overall, riser and down comer), volumetric oxygen mass transfer coefficient, liquid circulation velocity was studied in an internal loop concentric tubes airlift ...
Aseel Abd Al-Jabbar   +2 more
doaj   +2 more sources

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