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フルテキストURLKJ00004350933.pdf ( 638.5KB ) 公開日 2010-04-19
タイトルLiquid flow behaviour of bubble columns
作成者Sano, Yuji
Yamamoto, Kazuyoshi
作成者ヨミサノ, ユウジ
ヤマモト, カズヨシ
作成者別表記佐野, 雄二
作成者所属山口大学工学部
内容記述(抄録等)Liquid flow behaviour of a bubble column was investigated experimentally with emphasis on its turbulent motion. Pictures of tracer particles suspended in liquid were photographed with a high speed cinecamera on colour films avoiding the confusion of images of particles and bubbles. Trajectory of particles on the films were followed by a film analyzer and fluctuating velocities of tracers (as liquid) were obtained. Liquid flow behaviour was then analyzed statistically for the terms of the mean liquid velocity distribution, the fluctuating velocity distribution, the autocorrelation curve, the turbulent scale and so on. 1) Liquid flow in a bubble column showed the upward flow in the core with violent eddy motion and downward flow near the wall. The radial distribution of axial mean liquid flow velocity was consistent with Miyauchi's model and the radial mean velocity was neary equal to zero. 2) Liquid velocity fluctuates greatly in a short time as indicated by the intensity of turbulence of axial liquid velocity which was about 90% at the center. 3) The eddy scale in the center was about 1/6th-1/7th of column diameter in radial direction and about one half in axial direction. 4) In the down flow region near the wall, a large fluctuation with a characteristic periodicity was observed in the periodgram. 5) The liquid flow behaviour was not much influenced by liquid viscosity 1-12 c. p.
本文言語eng
主題工学
資料タイプtext
ファイル形式application/pdf
出版者山口大学工学部
出版者ヨミヤマグチ ダイガク コウガクブ
NII資料タイプ紀要論文
ISSN0386-3433
NCIDAA0086073X
学内刊行物(紀要等)Technology reports of the Yamaguchi University
掲載誌名Technology reports of the Yamaguchi University
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3
開始ページ375
終了ページ386
発行日1974-12
著者版/出版社版出版社版
備考本文データは国立情報学研究所において電子化したものである
リポジトリIDKJ00004350933
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/KJ00004350933