Abstract
In this study, the characteristics of the swirling flow type micro-bubble generating jet device has been developed for the purpose of cleaning of oil stains such as industrial products was demonstrated. Further, the impingement pressure of the micro-bubble jet was visualized. From these results, the bubble size distribution for the flow ratio of the microbubbles, chlorine concentration, PH distribution, etc. were shown. Moreover, the impingement pressure of the micro-bubble jet than impingement pressure of the water jet was a pressure value of about 1000-25000 times from visualization results using the pressure-sensitive paper
