D-131 複数気泡系に存在する未知の特徴周波数 : 遷移周波数

概要

論文の詳細を見る
This paper has pointed out that an unknown characteristic frequency exists in a multibubble system in a sound field, which discovered characteristic frequency, named a "transition frequency", gives rise to the phase reversal of the volume oscillation of a bubble in the system without accompanying resonance. Namely, this characteristic frequency does not correspond to the resonance (or natural) frequency of the system. Furthermore, it has been suggested that the sign reversal of the secondary Bjerknes force, an interaction force acting between pulsating bubbles, observed while a pair of bubbles undergo mutual attraction is caused by this characteristic frequency, not by the resonance frequency. This interpretation of the sign reversal appears to be more accurate and valid than previous ones, e.g., by Doinikov and Zavtrak, which are based on resonance-frequency analysis.
日本流体力学会の論文
2003-07-28