220 超音波エコーを用いた磁性流体沸騰二相流の可視化画像計測

抄録

The flow visualization and the image processing of boiling two-phase pipe flow of magnetic fluid under nonuniform magnetic field are conducted with the ultrasonic wave echo technique. From this visualization measurement, it is clarified that the distributions of void fraction and the bubble generation are strongly influenced by the magnetic field. Next, the stabilization of the two-phase flow is experimentally examined using the image processing technique, and the experimental results are qualitatively agreement with theoretical results. These fundamental studies on the flow visualization measurement indicate that the precise control and stabilization of the two-phase flow are possible by using the magnetic force of the fluid effectively.