Turbulent Mass Mixing in a Bubble Wake by using Photochromic Tracer

Koso, Toru; Nakayama, Hidetaka; Kuniba, Yusuke; Hayami, Hiroshi

doi:10.1299/jsmemecjo.2000.4.0_223

Cited by 2 publications

(3 citation statements)

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“…Those Reynolds numbers were from 21 to 460. 11 In the case of our experiment, the Reynolds number was in the rage from 10 to 100 numerical positions. Fig.…”

Section: Observation On Accelerated Corrosion By Bubble Movementmentioning

confidence: 99%

“…The bubble movement through the boundary layer accelerated the corrosion or dissolution rate. 11 Figure 5. Picture of dragging matter in a wake of a rising solid ball in NaCl solution.…”

Section: Observation On Accelerated Corrosion By Bubble Movementmentioning

confidence: 99%

“…8,9 There are a few data regarding the effect of the movement of the bubble on the corrosion rate, though the previous researchers has reported that the low Reynols number particle or the bubble dragged the solute. 10,11 In this study, the measurement of the corrosion rate was carried out by using the rotating cylinder to obtain the more precise information regarding the corrosion mechanism of the three types of the commercial bricks, and to obtain the deep understanding about the mechanism of corrosion under three conditions of the boundary layer.…”

Section: Introductionmentioning

confidence: 99%

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Corrosion Mechanism of Refractory Immersed in Molten Slag

Sunayama¹,

Hiramatsu²,

Kawahara

2011

ECS Trans.

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The corrosion test was carried out by using the rotating cylinder in the CaO-SiO2-FeO-CaF2 slag at 1673K for the commercial sintered MgO, MgO-C and MgO-Cr2O3 brick. The severe corrosion was observed for the MgO-C refractory. The mass transfer through the boundary layer must be accelerated by the movement of CO bubbles formed as a result of oxidation of C which reacted with FeO in the molten slag. The cause of the severe corrosion accompanied by H2 bubbles formation was confirmed by using a naphthalene cylinder. The dragging matter in the wake behind the small resin ball of 6 mm diameter rising up in NaCl solution was observed. Formation of the slightly soluble product, Cr2O3FexO, around the refractory and the Cr2O3 suspension in the molten slag played the major role in the appearance of high corrosion resistance.

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“…Those Reynolds numbers were from 21 to 460. 11 In the case of our experiment, the Reynolds number was in the rage from 10 to 100 numerical positions. Fig.…”

Section: Observation On Accelerated Corrosion By Bubble Movementmentioning

confidence: 99%

“…The bubble movement through the boundary layer accelerated the corrosion or dissolution rate. 11 Figure 5. Picture of dragging matter in a wake of a rising solid ball in NaCl solution.…”

Section: Observation On Accelerated Corrosion By Bubble Movementmentioning

confidence: 99%