Expansion of injected gas bubble and its effects on bath mixing under reduced pressure

Teruhisa Tatsuoka; Chizuna Kamata; Kimihisa Ito

doi:10.2355/isijinternational.37.557

Expansion of injected gas bubble and its effects on bath mixing under reduced pressure

Teruhisa Tatsuoka^*, Chizuna Kamata, Kimihisa Ito

^*Corresponding author for this work

School of Fundamental Science and Engineering

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The behavior of a single bubble was observed and the complete mixing time was measured under reduced pressure ( ∼ 1.33 × 10² Pa (1 Torr)) using a silicon oil model. The bubble expanded greatly and changed from oval to a spherical-cup shape. The complete mixing time tended to be constant independent of the stirring power of gas per unit bath volume in the low vessel pressure range ( < 6.66 × 10²Pa), because most of the expansion energy was dissipated and the mixing occurred near the bath surface; this was confirmed by observation of the flow.

Original language	English
Pages (from-to)	557-561
Number of pages	5
Journal	isij international
Volume	37
Issue number	6
DOIs	https://doi.org/10.2355/isijinternational.37.557
Publication status	Published - 1997

Keywords

Complete mixing time
Local stirring power
Optical fiber probe
Single bubble
Steelmaking
Vacuum refining

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.2355/isijinternational.37.557

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abstract = "The behavior of a single bubble was observed and the complete mixing time was measured under reduced pressure ( ∼ 1.33 × 102 Pa (1 Torr)) using a silicon oil model. The bubble expanded greatly and changed from oval to a spherical-cup shape. The complete mixing time tended to be constant independent of the stirring power of gas per unit bath volume in the low vessel pressure range ( < 6.66 × 102Pa), because most of the expansion energy was dissipated and the mixing occurred near the bath surface; this was confirmed by observation of the flow.",

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T1 - Expansion of injected gas bubble and its effects on bath mixing under reduced pressure

AU - Tatsuoka, Teruhisa

AU - Kamata, Chizuna

AU - Ito, Kimihisa

PY - 1997

Y1 - 1997

N2 - The behavior of a single bubble was observed and the complete mixing time was measured under reduced pressure ( ∼ 1.33 × 102 Pa (1 Torr)) using a silicon oil model. The bubble expanded greatly and changed from oval to a spherical-cup shape. The complete mixing time tended to be constant independent of the stirring power of gas per unit bath volume in the low vessel pressure range ( < 6.66 × 102Pa), because most of the expansion energy was dissipated and the mixing occurred near the bath surface; this was confirmed by observation of the flow.

AB - The behavior of a single bubble was observed and the complete mixing time was measured under reduced pressure ( ∼ 1.33 × 102 Pa (1 Torr)) using a silicon oil model. The bubble expanded greatly and changed from oval to a spherical-cup shape. The complete mixing time tended to be constant independent of the stirring power of gas per unit bath volume in the low vessel pressure range ( < 6.66 × 102Pa), because most of the expansion energy was dissipated and the mixing occurred near the bath surface; this was confirmed by observation of the flow.

KW - Complete mixing time

KW - Local stirring power

KW - Optical fiber probe

KW - Single bubble

KW - Steelmaking

KW - Vacuum refining

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JF - Transactions of the Iron and Steel Institute of Japan

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Expansion of injected gas bubble and its effects on bath mixing under reduced pressure

Abstract

Keywords

ASJC Scopus subject areas

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