National Space Development Agency of Japan
Nagoya University
Japan Space Utilization Promotion Center
Hitachi Zosen Corporation
Hitachi Zosen Corporation
Hitachi Zosen Corporation
出版者
宇宙開発事業団
出版者（英）
National Space Development Agency of Japan (NASDA)
The technology to remove bubbles from molten materials under microgravity condition is being developed by National Space Development Agency of Japan. The electromagnetic force in various methods for driving bubbles was chosen and the applicability has been investigated. This report provides the result of the microgravity experiment in the aircraft to observe bubbles motion in the flow led by the rotating magnetic field. In this experiment, a cylindrical vessel filled with nonconductive silicone oil was used to observe the bubbles motion in the aircraft. It simulated the flow in real materials that the aluminum ring forced to revolve by the rotating magnetic field was inserted in that vessel. The bubbles were found to be driven towards the rotating flow field along with the axis of rotation different from the ground experiment result in which bubbles moved upwards by the effect of buoyancy. Through this experiment and analysis, the efficiency of this method was confirmed and the fundamental data of the bubbles motion was obtained.
微小重力下における気泡移動の観察
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