Abstract

This work investigates the motion of the liquid metal on the surface of a heated cylindrical rod. Experiment data are presented, and computational models modified in accordance with the experimental results are described. Exploration of the motion of molten metal over the surface of fuel column simulator both in gravitational runoff and at gas blowoff involved high-speed recording. Formation of rivulets and droplets has been recorded, as well as their separation from the surface at gas blowoff. Based on the experiments to simulate the melt motion, it is proposed to take into account the capillary interaction forces and to consider—in addition to solid, film draining—the rivulet runoff mode. Analysis of literature made it possible to suggest a criterion for the transition from the film mode to the rivulet mode, as well as a method of calculating the basic parameters for the rivulet mode.

中文翻译：

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燃料元件和燃料组件中熔融金属行为的计算和实验研究：初步实验和计算模型

摘要

这项工作研究了液态金属在加热的圆柱棒表面上的运动。介绍了实验数据，并描述了根据实验结果修改的计算模型。在重力径流和气体吹气中对燃料塔模拟器表面上熔融金属运动的探索涉及高速记录。记录了小流和小滴的形成，以及在吹气时它们与表面的分离。基于模拟熔体运动的实验，建议考虑到毛细作用力，并考虑除了固体，膜排泄外，溪流径流模式。通过文献分析，可以提出从胶片模式到小溪模式过渡的标准，