Results 21 to 30 of about 98,469 (255)

Effect of Solid Phase and Geometry on Liquid Velocity of Three-Phase Bubble Columns

open access: yesChemical Engineering Transactions, 2015
Multiphase flows have a large applicability in the industry and its studies are very important. One example of three-phase system is bubble columns operating with solid phase as catalyst in the process.
K. Klock Da Costa   +4 more
doaj   +1 more source

Computational fluid dynamics applied to gas-liquid contactors. [PDF]

open access: yes, 1997
In this paper a `hierarchy of models¿ is discussed to study the fluid dynamic behaviour of gas-liquid bubble columns. This `hierarchy of models¿ consists of a Eulerian-Eulerian two fluid model, a Eulerian-Lagrangian discrete bubble model and a Volume ...
Delnoij, E.   +2 more
core   +3 more sources

Deposition and transport of graphene oxide in saturated and unsaturated porous media [PDF]

open access: yes, 2013
In this work, sand and bubble column experiments were conducted to explore the deposition mechanisms of graphene oxide (GO) particles in porous media with various combinations of moisture content and ionic strength.
Gao, Bin   +6 more
core   +3 more sources

Heat transfer to a horizontal cylinder in a shallow bubble column [PDF]

open access: yes, 2014
Heat transfer coefficient correlations for tall bubble columns are unable to predict heat transfer in shallow bubble columns, which have unique geometry and fluid dynamics.
Lienhard, John H., Tow, Emily W.
core   +1 more source

Two-Phase Bubble Columns: A Comprehensive Review

open access: yesChemEngineering, 2018
We present a comprehensive literature review on the two-phase bubble column; in this review we deeply analyze the flow regimes, the flow regime transitions, the local and global fluid dynamics parameters, and the mass transfer phenomena.
Giorgio Besagni   +2 more
doaj   +1 more source

Condensation oscillation characteristic of steam with non-condensable gas through multi-hole sparger at low mass flux

open access: yesNuclear Engineering and Technology, 2023
To study oscillation characteristic of steam and non-condensable gas direct contact condensation through multi-hole sparger at low mass flux, a series of experiments of pure steam and mixture gas condensation have been carried out under the conditions of
Dandi Zhang, Lili Tong, Xuewu Cao
doaj   +1 more source

3D Simulation and Validation of a Lab Scale Bubble Column

open access: yesChemical Engineering Transactions, 2015
Bubble columns are widely used in the chemical, petrochemical and biochemical industry. The correct prediction of the fluid dynamics, gas hold-up and bubble size distribution is of importance for the design and development of such reactors.
T. Eppinger, H. Matheus, R. Aglave
doaj   +1 more source

Measurements of Heat Transfer Coefficients to Cylinders in Shallow Bubble Columns [PDF]

open access: yes, 2014
High heat transfer coefficients and large interfacial areas make bubble columns ideal for dehumidification. However, the effect of geometry on the heat transfer coefficients outside cooling coils in shallow bubble columns, such as those used in multi ...
Lienhard, John H., Tow, Emily W.
core   +1 more source

Liquid-Phase Back mixing in Bubble Columns

open access: yesTikrit Journal of Engineering Sciences, 2010
Liquid-phase axial dispersion coefficients have been measured for air-water system in bubble columns of 10, 15 and 30 cm diameter. The experiments are carried out using a transient method (the tracer response method).
Burhan S. Abdulrazzaq
doaj   +1 more source

Numerical Simulation of Hold-up and Velocity Profiles for Two-phase Developed Flows in a Column

open access: yesChemical Engineering Transactions, 2021
The purpose of this article is to simulate and analyse two-phase fluid dynamics in a bubble column, through two different numerical approaches, in a fast and effective way, to minimize project costs and increase productivity.
Pâmela Palhares, Reginaldo Guirardello
doaj   +1 more source

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