垂直な平板に沿う遷移域自然対流の流動と熱伝達 : 可視化を援用した遷移構造の把握

概要

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The heat transfer and fluid flow of natural convection along a vertical flat plate in the transition region were investigated experimentally, and the fundamental characteristics of the transition region were discussed in the present study. Heat transfer coefficients were measured to distinguish the transition region at first. The wall temperature and the fluid flow were then visualized using a liquid crystal and a fluorescent paint, and visualized patterns were. Analyzed by digital image processing. It was revealed from the visualizations that horseshoe-shaped low-temperature patterns appear on the wall and that they play a significant role in heat transfer. Moreover, neither the heat flux nor the occurring position have any influence on the characteristic time and spatial scales of horseshoe shaped patterns, which possess three-dimensional and unstable structures.
一般社団法人日本機械学会の論文
1994-09-25