Expransion of Injected Gas Bubble and Its Effects on Bath Mixing under Reduced Pressure

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著者

    • TATSUOKA Teruhisa
    • Graduate Student, Department of Materials Science and Engineering, Waseda University
    • KAMATA Chizuna
    • Department of Materials Science and Engineering, Waseda University
    • ITO Kimihisa
    • Department of Materials Science and Engineering, Waseda University

抄録

The behavior of a single bubble was observed and the complete mixing time was measured under reduced pressure (∼1.33×10<sup>2</sup>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 (<6.66×10<sup>2</sup>Pa), because most of the expansion energy was dissipated and the mixing occurred near the bath surface; this was confirmed by observation of the flow.

収録刊行物

  • ISIJ international

    ISIJ international 37(6), 557-561, 1997-06-15

    The Iron and Steel Institute of Japan

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