0805 磁場下の磁性流体中における気泡の離脱挙動の計測(OS8-1 機能性流体工学の融合化新展開,OS8 機能性流体工学の融合化新展開)

抄録

Magnetic fluid is a liquid which becomes strongly magnetized in a magnetic field. It has been used for some heat transfer devises. There are many boiling bubbles on the heated surface in the devises, but few studies of behavior of boiling bubbles in magnetic fluid have been reported. In this study, electromagnetic induction method is applied to measuring the volume of bubble detachment. Electromagnetic induction method is a measuring method for multiphase flow using Faraday's law of induction. Experiment for measuring bubble detachment in the vertical pipe was performed. Applying a non-uniform magnetic field, the volume of bubble detachment in magnetic fluid was reduced. Consequently, the measuring method has demonstrated a promising capability of measuring bubble detachment behavior in magnetic fluid under a magnetic field.