GENERATING MECHANISM AND SHRINKING CHARACTERISTIC OF MICRO BUBBLES

• OHNARI Hirofumi

  徳山高専 土木建築工学科

• TSUNAMI Yui

  徳山高専専攻科 環境建設工学専攻

• OHNARI Hiroto

  山口大医院 博士課程

• YAMAMOTO Takako

  徳山高専 技術専門職員

Bibliographic Information

Other Title

• マイクロバブルの発生機構と収縮特性

Abstract

The generating mechanism of the micro-bubble by the high-speed camera photography was investigated. And shrinking process from micro bubble to micro-nano bubble was investigated by a flow visualization system using micro-scope photography. Micro bubbles were generated by the formation of rotating two phases fluid in the device. The rotating velocity at the exit of the generating device was about 400 revolutions per second.<BR>Almost all micro bubbules shrink and change to micro-nano bubbles. Micro-nano bubble is separated from micro bubble on the shrinking rate in time. And it was clear that the critical diameter of micro bubble to start the shrinkage was about 65 μm.

Journal

• PROCEEDINGS OF HYDRAULIC ENGINEERING

  PROCEEDINGS OF HYDRAULIC ENGINEERING 50 1345-1350, 2006

  Japan Society of Civil Engineers

Keywords

• Micro bubble
• Micro-nano bubble
• Generating mechanism
• high speed camera
• shrinkage
• rising velocity

Details

• CRID: 1390001205171832448
• NII Article ID: 130004043797
• DOI: 10.2208/prohe.50.1345
• ISSN: 18849172
• ISSN: 09167374
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed