摘要
本文为深入了解压水堆失水事故,在低含汽量工况下的流动过程,对Ricbter两相流模型进行了改进,并利用分析和数值方法讨论了描述两相临界流的数学模型及具有热力学失衡特性的低含汽量的两相临界流动。研究结果表明,两相临界流模型的结构方程应包含场变量的导数项。虚拟质量力对临界流量的影响不大,但对流动参数的分布影响很大,关于相间能量传递的描述,本文也提出了改进的设想。
In order to have a better understanding of the flowing process with low void fraction under the circumstances of water-loss accident in PWR, the Richter's two-phase flow model is improved and discussions are made on the mathematical models describing the two-phase critical flow and the low void fraction two-phase critical flow with thermo-dynamical non-equilibrium characteristics by means of the analytical and numerical methods.The results show that the structural formulations of the model of two-phase critical flow should enclose the derivatives of field variations and the virtual mass force has little influence to critical flow rate but affects the distribution of the flow parameters evidently.Sometentative ideas about the description of nterfacial energy are also presented.
出处
《核科学与工程》
CSCD
北大核心
1990年第1期20-33,4,共14页
Nuclear Science and Engineering
