【摘要】 基于一维均相平衡模型，导出系统无量纲特征方程，采用频域分析方法，开发了一个通用性程序，研究两相自然循环中流动不稳定特性。程序能直接求解自然循环回路的无量纲稳定边界，计算结果与所得到的实验数据吻合良好，并讨论了各参数对系统稳定性的影响。更多还原

【Abstract】 This paper presents a dimensionless frequency - domain analysis of two - phase flow stability in natural circulation loops. The analysis is based on an one - dimensional homogeneous equilibrium model of two - phase flow.The dimensionless governing equations of natural circulation system are established in general form. Then, the frequency - domain method and D- partition procedure are used to investigate the stability of the system.A computer code NASTAN-NF wrirten in FORTRAN is developed with high adaptability for natural circulation stability analysis. The dimensionless stability boundary predicted by the code is compared with the result of experiment conducted on the loop built in SJTU laboratory.Some instability mechanisms and influences of some parameters are also investigated in this paper.更多还原