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描述了２００ＭＷ核供热反应堆（ＮＨＲ－２００）重力注硼系统启动时发生的各种热工水力学现象。推导了描述该系统动态特性的微分方程组。在此基础上提出了在缩小比例的实验系统上进行模拟实验研究时应遵循的模拟准则，即几何准则，联通准则，流动准则，汽化准则及冷凝准则。分析了各准则在注硼系统动态过程中的作用及相对重要性。给出了在几种简化条件下描述该重力注硼系统的微分方程组及模拟准则。此研究对建立重力注硼模拟研究系统，对分析该系统的热工、流动及工作特性，对ＮＨＲ－２００的安全都有重要意义。
Describes various thermomechanical phenomena that occur at the start-up of the gravity boron injection system for a 200 MW nuclear heating reactor (NHR-200). The differential equations describing the dynamic characteristics of the system are deduced. On this basis, the simulation criteria that should be followed in the experiment of reducing scale are proposed, that is, the geometric criteria, the connectivity criterion, the flow criterion, the vaporization criterion and the condensation criterion. The roles and relative importance of each criterion in the dynamic process of boron injection system are analyzed. The differential equations and simulation criteria describing the boron injection system under several simplified conditions are given. The research on the establishment of gravity boron injection simulation research system, analysis of the system thermal, flow and work characteristics, are of great significance to the safety of NHR-200.