Bubbly and buoyant particle–laden turbulent flows

V Mathai, D Lohse, C Sun - Annual Review of Condensed Matter …, 2020 - annualreviews.org
Fluid turbulence is commonly associated with stronger drag, greater heat transfer, and more
efficient mixing than in laminar flows. In many natural and industrial settings, turbulent liquid …

[HTML][HTML] Two-phase bubble columns: A comprehensive review

G Besagni, F Inzoli, T Ziegenhein - ChemEngineering, 2018 - mdpi.com
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 …

A critical review of flow maps for gas-liquid flows in vertical pipes and annuli

B Wu, M Firouzi, T Mitchell, TE Rufford… - Chemical Engineering …, 2017 - Elsevier
The accurate prediction of two-phase gas and liquid flow regimes is important in the proper
design, operation and scale-up of pressure management and fluid handling systems in a …

Development of a deep learning-based image processing technique for bubble pattern recognition and shape reconstruction in dense bubbly flows

RFL Cerqueira, EE Paladino - Chemical Engineering Science, 2021 - Elsevier
This work presents a Convolutional Neural Network (CNN) based method for the shape
reconstruction of bubbles in bubbly flows using high-speed camera images. The bubble …

The dual effect of viscosity on bubble column hydrodynamics

G Besagni, F Inzoli, G De Guido… - Chemical Engineering …, 2017 - Elsevier
Some authors, in the last decades, have observed the dual effect of viscosity on gas holdup
and flow regime transition in small-diameter and small-scale bubble columns. This work …

The effect of liquid phase properties on bubble column fluid dynamics: Gas holdup, flow regime transition, bubble size distributions and shapes, interfacial areas and …

G Besagni, F Inzoli - Chemical Engineering Science, 2017 - Elsevier
The correct design, operation and scale-up of bubble columns rely on the knowledge of the
fluid dynamics at the “bubble-scale” and at the “reactor-scale”. This paper contributes to the …

Estimation of bubble size distributions and shapes in two-phase bubble column using image analysis and optical probes

G Besagni, P Brazzale, A Fiocca, F Inzoli - Flow Measurement and …, 2016 - Elsevier
A precise estimation of bubble size distributions and shapes is required to characterize the
bubble column fluid dynamics at the “bubble-scale”, and to evaluate the heat and mass …

Lift force coefficient of ellipsoidal single bubbles in water

H Hessenkemper, T Ziegenhein, R Rzehak… - International Journal of …, 2021 - Elsevier
For the simulation of bubbly flows, knowledge of the lift force as an interaction between gas
bubbles and a surrounding shear field is of great importance. The sign of the lift coefficient …

Modeling and simulation of photocatalytic CO2 reduction into methanol in a bubble slurry photoreactor

A Asadi, A Larimi, Z Jiang, A Naderifar - Chemical Engineering Science, 2022 - Elsevier
One of the attractive but still challenging ways of CO 2 utilization is photocatalytic conversion
of CO 2 into fuels. Since reactor design plays an important role in both the efficiency and …

The effect of aspect ratio in counter-current gas-liquid bubble columns: Experimental results and gas holdup correlations

G Besagni, A Di Pasquali, L Gallazzini… - International Journal of …, 2017 - Elsevier
It is generally admitted that the gas holdup is independent of the column dimensions and
gas sparger design if three criteria are satisfied: the diameter of the bubble column is larger …