P2-64 Visualization of Acoustically Induced Cavitation Bubbles and Microjets with the Aid of High Speed Camera(Short presentation for poster)

概要

論文の詳細を見る
Water model experiments at a frequency of about 42 kHz have been performed to visualize dynamic behaviors of acoustic cavitation bubbles by using high speed digital camera. It is observed that clustered multi-bubbles linearly transfer toward random directions. The behavior of clustered bubbles is discussed in relation to the behavior of microjets as well as phase transition of water between a normal liquid state and a super critical-fluid state. Another experiment has also been carried out to visualize microjets that appeared near around a water/tetralin interface and a water/air interface. It found that a behavior of clustered multi-bubbles should stem that of micro-jets and the jets can give a strong impinge effect on the surfaces. Experimental findings in this paper, behaviors of cavitation bubbles and micro-jets, acoustic cavitation phenomena are quite important to understand and control for intensified macro and micro mixing of liquids.
超音波エレクトロニクスの基礎と応用に関するシンポジウム運営委員会の論文
2004-10-27