In designing a thermal–hydraulic facility simulating a floating nuclear power plant, the scaling of dynamic motion is necessary. As natural circulation under motion is a significant phenomenon in floating nuclear reactors, a scaling analysis for single-phase natural circulation was performed, and similarity criteria were derived for inclination, frame acceleration, and rotational motion conditions. The inclination angle can be reduced or maintained in the scaled model with adjustments to the hydraulic diameter and volumetric heat generation. In addition, the amplitudes of acceleration and angle should be maintained in the model under motion, and their periods follow the time scale. Thereafter, the similarity criteria were verified using a system analysis code to simulate virtual test loops of the prototype and scaled-down models for a one-dimensional single-phase natural circulation under various motion conditions. In result, this similarity criteria can be used to design a scaled-down single-phase natural circulation facility under motion conditions.

在设计模拟浮动核电站的热工-液压设施时，必须对动态运动进行缩放。由于运动中的自然循环是在浮式核反应堆中的重要现象，因此对单相自然循环进行了定标分析，并得出了倾斜度，框架加速度和旋转运动条件的相似性标准。通过调整水力直径和热量的产生，可以在比例模型中减小或保持倾斜角度。此外，在运动中的模型中应保持加速度和角度的幅度，并且其周期遵循时间尺度。之后，使用系统分析代码验证相似性标准，以模拟原型的虚拟测试循环和按比例缩小的模型，以用于在各种运动条件下的一维单相自然循环。结果，该相似性标准可用于设计运动条件下按比例缩小的单相自然循环设施。