Numerical Investigation of Bubble Dynamics in Aluminium Electrolytic Cells

Zhang, Kaiyu; Feng, Yuqing; Schwarz, Phil; Cooksey, Mark; Wang, Zhaowen

doi:10.1002/9781118359259.ch152

Cited by 4 publications

(5 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Case 6: CO2–cryolite system, bubble size 33.9 mm. All cases are plotted from the same location: the left edge is 0.136 m from the left side of the full simulation domain, and the length is 0.445 m. (Adapted from ref . Copyright 2012 The Minerals, Metals & Materials Society.…”

Section: Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

“…In addition to the study of bubble dynamics, the bubble-induced liquid motion is quantified as well. The investigation is based on similar simulation conditions to those used in our previous study . Also, we identified some errors in the data processing in our earlier work, so we repeated the simulation in the present study with an optimized gas injection method.…”

Section: Introductionmentioning

confidence: 97%

“…Also, we identified some errors in the data processing in our earlier work, so we repeated the simulation in the present study with an optimized gas injection method. Hence, the present work amends and extends the research presented in our previous publication, and provides updated information and further discussion.…”

Section: Introductionmentioning

confidence: 98%

“…Einarsrud studied the effect of detaching bubbles on aluminum–cryolite interfaces; Das et al investigated the principal characteristics of the detachment and sliding mechanism of gas bubbles under an inclined anode; Wang and Zhang studied the effect of the anode edge on bubble release. In our own recent work, the relationships between the air–water system and CO 2 –cryolite systems have been checked. The assessment was focused on the bubble dynamics during the bubble sliding process under the anode only.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Computational Fluid Dynamics (CFD) Modeling of Bubble Dynamics in the Aluminum Smelting Process

Zhang

Feng

Schwarz

et al. 2013

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

This paper presents a microscale modeling approach for investigation of bubble dynamics in the aluminum smelting process. The motion of a single bubble has been studied through a computational fluid dynamics (CFD) model facilitated with the volume-of-fluid (VOF) method to capture the bubble shapes. Using a two-dimensional geometry of part of a real cell as the testing bed, the motion of different sized bubbles has been simulated in an air–water system and a CO2–cryolite system. Comparisons between the two systems are conducted through the three periods of bubble motion: bubble sliding under the anode, bubble releasing at the anode edge, and bubble rising in the side channel. It was found that both systems show similar trends in bubble dynamics, such as an increase in the bubble sliding velocity as the bubble size increases and the appearance of a thick head at large bubble sizes. Quantitatively, there are differences between the two systems, evidenced in terms of the detailed bubble dynamics at each period of bubble motion, such as the bubble morphology, the bubble sliding velocity, the bubble layer thickness, and the bubble-induced liquid flow. The detailed microscale modeling provides useful information for the development of a multiscale modeling methodology by building constitutive correlations to support the macro/process scale modeling.

show abstract

Section: Results and Discussionmentioning

confidence: 99%

Section: Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations