Bubble formation at submerged nozzles for small gas flow rate under low gravity

Hideki Tsuge, Koichi Terasaka, Wataru Koshida, Hirokazu Matsue

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

To develop gas-liquid contacting processes in space stations, bubble formation at a nozzle submerged in liquid under low gravity was discussed. Effects of gas flow rate and surface tension on bubble formation were experimentally investigated over a 10 s period using the drop shaft of Japan Microgravity Center at Kamisunagawa in Japan. When the gas flow rate is comparatively small, a spherical bubble does not detach from the nozzle and continues to expand in quiescent liquids. To theoretically describe bubble formation under low gravity, the non-spherical bubble formation model was used. It is predicted by this model that bubble volume increases under constant flow conditions and a bubble does not detach from a nozzle when the gas flow rate is small in a quiescent liquid. These calculated results of bubble volume and shape agree well with the experimental ones.

Original languageEnglish
Pages (from-to)3415-3420
Number of pages6
JournalChemical Engineering Science
Volume52
Issue number20
DOIs
Publication statusPublished - 1997 Oct

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Bubble formation
Flow of gases
Nozzles
Gravitation
Flow rate
Liquids
Microgravity
Space stations
Bubbles (in fluids)
Surface tension
Gases

Keywords

  • Bubble
  • Bubble formation
  • Bubble formation model
  • Drop shaft
  • Low gravity
  • Nozzle

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Bubble formation at submerged nozzles for small gas flow rate under low gravity. / Tsuge, Hideki; Terasaka, Koichi; Koshida, Wataru; Matsue, Hirokazu.

In: Chemical Engineering Science, Vol. 52, No. 20, 10.1997, p. 3415-3420.

Research output: Contribution to journalArticle

Tsuge, Hideki ; Terasaka, Koichi ; Koshida, Wataru ; Matsue, Hirokazu. / Bubble formation at submerged nozzles for small gas flow rate under low gravity. In: Chemical Engineering Science. 1997 ; Vol. 52, No. 20. pp. 3415-3420.
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