下端が閉じた重直平行平板内の自然対流熱伝達 : 第2報,実験

概要

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An experimental study on natural convection heat transfer in two vertical parallel plates with a closed lower end was performed in air using isothermal plates with heights of 100 and 200 mm, and the results were compared with those of numerical analysis. The Grashof number range in the experiment was about 10^6 to 10^8 and the ratio of hot and cold wall temperatures was from 0.4 to 1. In the dimensionless distance of the parallel plates of from 0.1 to 0.3, the temperature of the air between the plates fluctuated considerably over time. The heat transfer coefficients of the plates in the experiment exhibit good agreement with the numerical results when Gr_sS^2 >__- 10^6, but when Gr_sS^2 < 10^6, they are slightly smaller than the numerical results, at R=1.
一般社団法人日本機械学会の論文
1987-07-25