凝固を伴う密度差・表面張力差共存自然対流の研究

概要

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Buoyancy and surface tension driven natural convection in horizontal rectangular liquid layers was investigated. One of the vertical walls of the container was heated and the opposite wall was cooled below the freezing point of the liquid. Solidification initiated at the cooled wall proceeded on toward the opposite wall under the influence of convection. Experimental observation and numerical analyses, both one-dimensional and two-dimensional, were carried out, and the limit of the one-dimensional approximation was made clear. It was found that the two-dimensional analysis making use of the boundary fixing method could predict fairly well the rate of solidification and the profile of the solid-liquid boundary, except for a region near the free surface, since the thermal conditions could not be specified exactly in this region. At the same time, the phenomenon under zero-g field was analyzed numerically, and the effect of pure thermocapillary convection on solidification was made clear.
社団法人日本機械学会の論文
1986-02-25