Abstract

Unsteady-state UF₆ desublimation into a vertical immersed tank 6.0 × 10^–2 m³ in volume with horizontal internal ribs has been numerically modeled using an in-house developed software-implemented two-dimensional mathematical model. The dependences of the characteristics of UF₆ desublimation on the pressure and temperature of gaseous UF₆ in the collector; the coolant temperature; and the number, arrangement, and geometry of the ribs in the tank are described. It is shown that increasing the number of ribs, changing the heat- and mass-transfer conditions, and increasing the diameter of the central openings in the horizontal ribs significantly increase the average productivity of the tank and decrease its filling time.

中文翻译：

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水平肋肋储罐中UF 6的升华数学模型

摘要

使用内部开发的软件实现的二维数学模型对非稳态UF ₆升华到垂直浸入式储罐中，该储罐的体积为6.0×10 ^–2 m ³，带有水平内部肋骨，进行了数值建模。UF _6的升华特性与气态UF ₆的压力和温度的关系在收集器中；冷却液温度；描述了罐中肋的数量，布置和几何形状。结果表明，增加肋条的数量，改变传热和传质条件以及增加水平肋条的中央开口的直径，可以显着提高储罐的平均生产率并缩短其填充时间。