The Effect of Wettability on a Large Bubble Rising in an Inclined Circular Pipe Filled with Water

• FUKUSHI Keisuke

  北海道大学工学研究科大学院生

• IGUCHI Manabu

  北海道大学工学研究科

Bibliographic Information

Other Title

• 傾斜円管内静止水中を上昇する大気泡に及ぼす濡れ性の影響
• ケイシャ エンカンナイ セイシ スイチュウ オ ジョウショウ スル ダイ キホウ ニ オヨボス ヌレセイ ノ エイキョウ

Abstract

Observation has been made on the behavior of a single large bubble rising in an inclined circular pipe filled with water. The inner wall of the pipe is wetted by water. It is coated with fluororesin to get it to be poorly wetted. In the inclined poorly wetted pipe, the rising velocity of a single bubble increases with an increase in the inclination angle, exhibits a mild peak, and then decreases. The wake formed behind the bubble and the shearing and buoyancy forces acting on the bubble are mainly responsible for this phenomenon. In the wetted pipe the rising velocity of a single bubble agrees with the equation proposed by Bendiksen et al. An empirical equation is proposed for the rising velocity of a bubble in the poorly wetted pipe.

Journal

• Journal of the Japanese Society for Experimental Mechanics

  Journal of the Japanese Society for Experimental Mechanics 6 (4), 412-417, 2006

  The Japanese Society for Experimental Mechanics

Keywords

• Wettability
• Inclination angle
• Single bubble
• Rising velocity
• Wake

Details

• CRID: 1390282680166099584
• NII Article ID: 10018458197
• NII Article ID: 130004489898
• NII Book ID: AA11822914
• DOI: 10.11395/jjsem.6.412
• ISSN: 18844219
• ISSN: 13464930
• NDL BIB ID: 8632892
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8632892
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed