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Mixing characteristics of a submerged jet measured using an isokinetic sampling probe

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Abstract

The flow properties and mixing characteristics of a submerged gas jet near the injection point were measured using an isokinetic sampling probe in a water model. The radial and axial profiles of gas velocity, water velocity, and void fraction were measured. Since the gas velocity was always larger than that of the water, the existence of a slip velocity between gas and water was confirmed. A one-dimensional mathematical model was developed using the dimensionless slip velocity as a parameter. The dimensionless slip velocity (S) was estimated to be 0.3 to 0.6 for the nitrogen-water system. TheS of the He-water system was slightly larger than that of the nitrogen-water system. When the model was applied to calculate the gas fraction in the jet for the nitrogen-mercury system,S was estimated to be 0.95 to 0.97. A large slip velocity between gas and liquid is expected for gas-metal systems.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Waseda University, 169, Tokyo, Japan

    K. Ito (Associate Professor)

  2. Research Institute of Mineral Dressing and Metallurgy, Tohoku University, 980, Sendai, Japan

    S. Kobayashi (Associate Professor) & M. Tokuda (Professor)

Authors
  1. K. Ito
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  2. S. Kobayashi
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  3. M. Tokuda
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Formerly Research Associate, the Research Institute of Mineral Dressing and Metallurgy, Tohoku University

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Ito, K., Kobayashi, S. & Tokuda, M. Mixing characteristics of a submerged jet measured using an isokinetic sampling probe. Metall Trans B 22, 439–445 (1991). https://doi.org/10.1007/BF02654282

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