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Title: 減圧密閉容器内を上昇する気泡の観察
Other Titles: Observation of Single and Continuous Bubbles Rising in Reduced Pressure Vessel
Authors: 熊谷, 剛彦1 Browse this author →KAKEN DB
岸本, 康夫2 Browse this author
中村, 修3 Browse this author
田川, 俊夫4 Browse this author
姫野, 武洋5 Browse this author
嶋﨑, 真一6 Browse this author
Authors(alt): Kumagai, Takehiro1
Kishimoto, Yasuo2
Nakamura, Osamu3
Tagawa, Toshio4
Himeno, Takehiro5
Shimasaki, Shinichi6
Keywords: vacuum refining
expansion of bubble
single rising bubble
cold model
Issue Date: 1-Feb-2015
Publisher: 日本鉄鋼協会
Journal Title: 鉄と鋼
Volume: 101
Issue: 2
Start Page: 93
End Page: 100
Publisher DOI: 10.2355/tetsutohagane.101.93
Abstract: The expansion and shape change behaviors of a single rising bubble and continuously rising bubbles in a reduced pressure vessel were observed. The main results obtained are as follows: 1) The aspect ratio, w/h, of a single rising bubble under reduced pressure is almost the same as that under atmospheric pressure. However, the width of the rising bubble expanded to 1.4 times, which is larger than the calculated expansion ratio. This may be explained by the change of the bubble shape while rising. 2) The observed single bubble shapes were ellipsoidal, spherical cap, and breakup of spherical cap. The upward velocity of the bubble increases with the initial volume of the bubble. The upward velocity also increases as the bubble rises.
Rights: 著作権は日本鉄鋼協会にある
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 熊谷 剛彦

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