Amplitude of Wave Motion Accompanied by Lift-up of Particles in a Cylindrical Bath Agitated by Swirling Bubbling Jet

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  • 円筒容器内旋回気泡噴流による堆積粒子浮上時に現れる波動の振幅
  • エントウ ヨウキ ナイ センカイ キホウ フンリュウ ニ ヨル タイセキ リュウシ フジョウジ ニ アラワレル ハドウ ノ シンプク

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Swirl motions of a liquid partially filled in a cylindrical vessel occur under a certain gas injection condition through a J-shaped lance. The swirl motions are classified into two types depending mainly on the aspect ratio of the bath: shallow-water wave type and deep-water wave type swirl motions. The aspect ratio is defined as a ratio of the bath depth to the vessel diameter. Particular attention is paid to the latter swirl motion in this study because of its high mixing ability. Empirical equations are proposed for the amplitude of the swirl motion in the case that sedimentary particles are lifted up into the bath.

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