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Characteristics of flow fields in the gas-liquid mini-bubble columns with PIV measurements
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  • Chen Li,
  • Yongli Ma,
  • Ming-yan Liu,
  • Kaiyue Wang
Chen Li
Tianjin University

Corresponding Author:[email protected]

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Yongli Ma
Tianjin University
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Ming-yan Liu
Tianjin University
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Kaiyue Wang
Tianjin University
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As a new type of gas-liquid microreactors, the gas-liquid mini-bubble column have potential applications. However, few studies on the flow fields in the mini-bubble column can be found at present. In this work, Particle Image Velocimetry (PIV) was first used to visually study the velocity fields, vorticity fields and bubble dynamics in the gas-liquid mini-bubble columns with column inner diameters of 1to 3 mm and mini-bubble diameters ranged from 0.7 to 1.3 mm. It is found that with the increase of superficial liquid velocity, bubbles rose from almost straight line to Z-shaped or S-shaped trajectory, and the bubble trajectory changed from 1-D to 3-D; when the bubble velocity changed, the bubble size and gas holdup decreased; bubble terminal velocity was controlled by bubble buoyancy and flow resistance, and increased slightly with bubble coalescence. These findings may provide basic reference for the design and scale-up of such mini-bubble column reactor.
22 Jan 2022Submitted to AIChE Journal
25 Jan 2022Submission Checks Completed
25 Jan 2022Assigned to Editor
02 Feb 2022Reviewer(s) Assigned
06 Apr 2022Editorial Decision: Revise Major
29 Apr 20221st Revision Received
06 May 2022Submission Checks Completed
06 May 2022Assigned to Editor
18 May 2022Reviewer(s) Assigned
31 May 2022Editorial Decision: Accept