Abstract

The developed and software-implemented simplified three-dimensional mathematical model of the unsteady-state process of UF₆ desublimation into immersible vertical tanks with vertical finning is described. The study of regularities in the UF₆ desublimation process is performed by numerical modeling. The results of calculations on the average capacity of vertically finned tanks with a volume of 1.0–4.0 m³ at varied collector pressure, cooling agent temperature, and tank geometry are presented. It is demonstrated that an increase in the number of fins in a varied heat and mass transfer regime appreciably improves the average capacity of vertically finned tanks and reduces the time of their filling.

中文翻译：

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垂直翅片槽中UF 6的升华

摘要

描述了UF ₆升华到具有垂直翅片的可浸入垂直罐中的非稳态过程的开发和软件实现的简化三维数学模型。UF ₆升华过程中的规律性研究是通过数值模型进行的。给出了在收集器压力，冷却剂温度和储罐几何形状变化的情况下，容积为1.0–4.0 m ³的垂直翅片储罐平均容量的计算结果。结果表明，在不同的传热和传质过程中，翅片数量的增加明显改善了垂直翅片式储罐的平均容量，并减少了其填充时间。