Study on the method for evaluating bubble presence in micro/nanobubble research

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05815
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Fluid engineering
• Research Institution: Kochi National College of Technology
• Principal Investigator: HATA Takashi 高知工業高等専門学校, ソーシャルデザイン工学科, 准教授 (00342577)
• Co-Investigator(Kenkyū-buntansha): 西内 悠祐 高知工業高等専門学校, ソーシャルデザイン工学科, 准教授 (00455172) ; 多田 佳織 高知工業高等専門学校, ソーシャルデザイン工学科, 准教授 (10611775)
• Research Collaborator: YAMAMOTO Kenji 株式会社坂本技研, 事業本部・営業技術部, 課長
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: マイクロ・ナノバブル / 存在評価 / 超音波 / ラジカル / ソノルミネッセンス

Outline of Final Research Achievements

An evaluation of the presence of micro/nano bubbles using radicals generated in the decay phenomenon of bubbles by ultrasonic waves was carried out, and the following findings were obtained. ① From the examination of the disappearance of micro/nano bubbles by ultrasonic wave, the transition to the destruction occurs rather than the generation of the bubble in high frequency. ② The number of micro/nano bubbles can be estimated from the amount of radicals generated. ③ It is possible to estimate the number of micro/nano bubbles from the amount of organic matter decomposed by radicals generated in the decay of micro/nano bubbles.

Free Research Field

混相流