表面張力を伴う液滴成長過程の流れ解析

概要

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In vacuum evaporation processing technologies, the recovery of the evaporated substance is of great importance. The inefficient vapor should be liquefied and collected on the recovery plate, which is located so as to face the vapor source. In this paper, the numerical analysis on the dynamic behavior of a droplet grown to detach from the recovery plate is presented. The liquid was taken to be molten metal, which has a larger surface tension than other commonly used liquids. In the flow analysis with the freely-moving boundary, the numerical model of the surface tension has been of interest. Therefore, in order to analyze the high-deformation phenomena, such as the falling droplet, the instabilities on the boundary should be investigated and treated carefully. Here, the boundary height function was defined by multiple coordinates, which provided an effective method of recognizing the complicated boundary precisely. The experiment using a liquid Bi droplet also demonstrated the validity of this method.
社団法人日本機械学会の論文
1991-08-25