Bubbly and buoyant particle–laden turbulent flows
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 …
efficient mixing than in laminar flows. In many natural and industrial settings, turbulent liquid …
[HTML][HTML] Two-phase bubble columns: A comprehensive review
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 …
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
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 …
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 …
reconstruction of bubbles in bubbly flows using high-speed camera images. The bubble …
The dual effect of viscosity on bubble column hydrodynamics
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 …
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 …
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 …
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
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 …
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 …
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
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 …
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 …
gas sparger design if three criteria are satisfied: the diameter of the bubble column is larger …