1462 管路分岐部を過ぎる気泡流の微少重力実験

概要

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A microgravity experiment is effective in investigating the bubbly flow. Because the bubble in the flow doesn't experience any buoyant force under microgravity condition. Bubble behavior through the branching pipe under a microgravity condition was investigated by an air-water loop system installed in a free fall capsule. The number of bubbles flowed into the branching pipe section increased as the bubble diameter increased. When the mean diameter of bubble was over 3.0mm, 80% of the bubbles were able to flow into the branching pipe. This is because a bubble with a large diameter experiences the large body force caused by the pressure difference between the main and the branching pipe. This pressure difference was generated by the flow separation from the corner of the branching pipe.
社団法人日本機械学会の論文
2003-08-05