MELCOR程序堆芯行为模型分析

he potential drawbacks in design and implementation of measure for mitigating severe accident are appeared in Fukushima Dai-ichi Nuclear Power Plant accident. Deeply Study upon the phenomena and sequences during severe accident is significant to implement effective mitigation measures and ensure the integrity of core. Simulation of severe accident used integral codes in past years is an indispensable means for studying severe accident sequences in nuclear power plant. Based on the fully integrated, engineering-level computer code MELCOR, the functions of MELCOR and MELGEN and the relationships between them are presented briefly, as well as the calculation process and the structure of core behavior in the COR packag. The physical models and phenomenological models for core behavior in MELCOR and the sub-models of program in which those models implement and activate are analyzed in order to help the code user with more detail user's guide.