液滴の表面張力対流に及ぼす支持棒の影響

概要

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The Marangoni convection in a supported liquid droplet suddenly subjected to radiative heating by a hot environment is analyzed by two-dimensional numerical analysis. The effects of the thermal conductivity and the heat capacity of the support rod on the flow and temperature rise within the droplet were studied. The following results are obtained. (1) The surface-tension-driven convection occurs because of the difference between the temperature rise of the surfacees of the support rod and the liquid droplet. (2) The Marangoni convection within the liquid droplet decreases when the heat capacity or the thermal conductivity of the support rod becomes small. (3) The mean temperature change within the droplet is scarcely affected by the existence of the support rod, but when the heat capacity or the thermal conductivity of the support rod is large, the mean temperature becomes somewhat smaller than that in the case with out the support rod. (4) The maximum temperature of the droplet becomes small when the heat capacity or the thermal conductivity of the support rod is large.
一般社団法人日本機械学会の論文
1996-02-25