対流が存在する飽和多孔質体における凝固特性 : 冷却面温度変動に対する固液界面位置の応答(熱工学,内燃機関,動力など)

概要

論文の詳細を見る
Fundamental study on a solidifying phenomenon in a rectangular water-saturated porous medium was carried out when vigorous convection occupies the liquid layer. The system is cooled from the upper boundary and heated from below. In this study, the dynamic response of the solid-liquid interface to the periodical temperature fluctuation at the cooling surface was investigated in detail. Especially, the amplitude of solid-liquid interface and the phase lag to the time-varying cooling temperature were monitored for various periods and cooling temperatures. One-dimensional numerical model was developed by assuming the constant convective heat flux from liquid regime. The numerical model explains well the observed experimental results. It is found that the amplitude of oscillating solid-liquid boundary increases in proportion to the temperature fluctuation period, and that both the thicker solid layer and the shorter period cause the greater phase lag.
社団法人日本機械学会の論文
2005-03-25