403 宇宙ステーション実験を目指した液柱内マランゴニ対流実験

概要

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The thermocapillary convection in a half-zone liquid bridge was investigated experimentally. With increasing the temperature difference between the rods sustaining the bridge, the flow exhibited transition from steady to oscillatory convection. Induced convection was visualized by using particles as tracers. Special attention was paid to the distribution of the dispersed particles in the present study. The particles were found to get accumulated in a certain experimental conditions. This is called as PAS, particle accumulation structure, after Schwabe. The observed pattern was either 'steady ring,' 'lump,' or 'twisted loop.' The condition of the occurrence of PAS was investigated carefully. It turned out that the PAS was reproducible (1996). The direct numerical simulation is conducted to reproduce the flow structure and the PAS for a typical experimental condition.
一般社団法人日本機械学会の論文
2001-03-09