傾斜平板上自然対流の遷移過程における流動と熱伝達

概要

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The present study deals with fluid flow and heat transfer in the transition process of natural convection over an inclined plate. In order to examine the mechanism of transition, experiments on the flow and heat transfer were performed for various plate inclination angle in the range of 20°〜75°. The wall temperature and fluid flow fields were visualized using a liquid crystal sheet and fluorescent paint, respectively. It was confirmed from the visualization that the separation of the boundary layer flow takes place and the beginning point of streaks appears over the plate wall when modified Rayleigh number exceeds characteristic value for each inclination angle. The local Nusselt number in the transition range were proportional to one-third power fo local modified Rayleigh number. By introducing a nondimensional parameter, the correlation between visualizations of the flow and temperature fields and heat transfer is rearranged quantitatively.
一般社団法人日本機械学会の論文
2000-12-25