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根据核电站安全分析及实时仿真的需要，针对核电站一回路在事故状态下的两相流问题，进行了仿真建模及其算法的研究。在以漂移流理论为依据建立的理论模型的基础上提出了一种既能比较准确反映流体网络的动态过程，又能实现快速运算、达到实时仿真要求的两相流流体网络模型的建模方法和求解技术。所建模型具有精度高、实时性好的优点。并可适用于各种拓扑结构的两相流流体网络的实时仿真计算。
According to the needs of nuclear power station safety analysis and real-time simulation, aiming at the two-phase flow problem of the first circuit of nuclear power plant in accident state, the simulation modeling and algorithm are studied. Based on the theoretical model established on the basis of drift flow theory, a modeling method of two-phase flow fluid network model that can not only accurately reflect the dynamic process of the fluid network but also realize fast calculation and meet the real-time simulation requirements is proposed And solving technique. The model has the advantages of high precision and good real-time. And can be applied to real-time simulation calculation of two-phase flow fluid network of various topologies.