Numerical Simulation on Penetration Stage of a Rising Bubble through an Oil/Water Interface

Kochi, Norifumi; Ueda, Y.; Uemura, Tomomasa; Ishii, Toshio; Iguchi, Manabu

doi:10.2355/isijinternational.51.1011

Cited by 16 publications

(11 citation statements)

References 6 publications

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“…More recent investigations using low temperature media have shown that a metal column generated below the bubble can sometimes penetrate fully into the upper slag layer before it finally collapses. 7,8) This behavior of the bubble and liquid/liquid interface is shown in schematically Fig. 1; however, Song et al 9) have proposed an additional rupture phenomenon, wherein an elongated metal column is formed by two or three bubbles passing through the interface of an Al-Cu alloy/molten salt system (700°C).…”

Section: Introductionmentioning

confidence: 99%

Multiphase Particle Simulation of Gas Bubble Passing Through Liquid/Liquid Interfaces

et al. 2014

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A newly developed computational fluid dynamics (CFD) model based on a multi-phase particle method is presented for predicting the entrainment behavior of liquid metal into slag due to rising single bubble. By comparing results calculated using this model against experimental data, it was found that the transient behavior of bubbles and the two immiscible liquids can be accurately estimated by this method. The rupturing of the thin water film surrounding the bubble was less reliably predicted, but this 3-dimensional unsteady numerical model still nevertheless provides valuable new information for directly predicting the change in the liquid/liquid interface over time. Such prediction of continuous change in an interface has not been possible by more conventional methods, and thus further improvement in the accuracy of this simulated model may well be the only way to non-empirically predict the metal-slag interface area in actual processes.

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Section: Introductionmentioning

confidence: 99%

Multiphase Particle Simulation of Gas Bubble Passing Through Liquid/Liquid Interfaces

et al. 2014

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“…This study has investigated a breakup phenomenon of the water column pulled by a rising bubble through an oil/water interface, using the previous procedure 1) of the FLUENT numerical code.…”

Section: Discussionmentioning

confidence: 99%

“…The present paper follows the previous computational procedure 1) which successfully simulates the penetration phenomenon of the water column at the stage (V).…”

Section: Computational Proceduresmentioning

confidence: 99%

“…1,2) The passage of a bubble through an oil (upper phase)/water (lower phase) interface starts with an upward lifting of the interface, and the bubble attracts a column of the water phase upwards keeping a film of the water phase around itself. [2][3][4] The film and column then flow back into the water phase, and the parts of them disintegrate into water droplets.…”

Section: Introductionmentioning

confidence: 99%

“…3,5) In addition, the penetration of the water column at the stage (V) was also successfully computed against the experimental results in our associated study. 1) According to Reiter & Schwerdtfeger,2,4) the water column behind the rising bubble disintegrates into several parts of them after the stage (V). They experimentally measured the height of the water column and total number of droplets into which the water column disintegrates.…”

Section: Introductionmentioning

confidence: 99%

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