タイトル（掲載誌）Heat Transfer. Japanese Research
一般注記This paper investigates a bubble,placed so that it bridges the cross section of a horizontal narrow divergent passage under Earth gravity(1-G). In a narrow passage,inertial forces are known to be small in comparison with viscous forces. Gravitational force is not dominant in bubble behavior in a horizonal narrow passage under the 1-G condition. In this sense,the bubble behavior in the passage is similar to that under a low-gravity condition. Understanding bubble behavior is important in relation to separating a gas from a two-phase gas-liquid flow and controlling a gas-liquid interface under low-gravity conditions. Thus,a single bubble is placed under the 1-G condition. The bubble geometry and its behavior are studied experimentally for gap sizes ranging from 0.5 mm to 2 mm and divergent angles from 1° to 5° using ethyl alcohol as the working fluid. The following results were obtained:(1)the bubble was found to move to the greater cross-sectional area;(2)the gas-liquid interface geometry in a top view can be expressed as a contact circle model that takes the maximum radius in the passage;and(3)the effects of gap size and the projected bubble area on bubble behavior are clarified.
一次資料へのリンクURLhttps://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=22288&item_no=1&attribute_id=22&file_no=1
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）