摘要
使用FLUENT计算流体程序数值模拟了AP1000在严重事故条件下的堆芯升温过程,目的是对堆芯裸露后并在其显著熔化前对堆芯升温的均匀程度进行比一体化事故程序MAAP更为详尽的研究,进行围筒和吊篮温度分析,同时评估MAAP程序堆芯升温计算结果。分析结果表明:在堆芯显著熔化时刻,堆芯围筒和吊篮已熔化,因此熔融堆芯将从侧面迁移进入下封头,同时对比证明MAAP程序关于堆芯升温的计算结果也是可接受的。
The core heating up of AP1000 reactor during a severe accident sequence was simulated numerically by FLUENT.The objective was to study the uniformity of the heating up after the uncover but before significant melting of the core in more detail than that was possible using integral severe accident codes and obtain the temperature of shroud and baffle,also to assess the MAAP core heating up calculation.The results show that before significant core damaging,the shroud and baffle have melted causing an side relocation of the debris.Furthermore,the MAAP calculation of core heating up is also acceptable.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2012年第10期1216-1220,共5页
Atomic Energy Science and Technology
关键词
严重事故
数值模拟
堆芯升温
severe accident
numerical simulation
core heating up
