严重事故下的氢气燃烧模型研究  

Research on Hydrogen Combustion Model in Severe Accident

作　　者：余婧懿 杨小明 杨洋 马如冰 元一单 YU Jingyi;YANG Xiaoming;YANG Yang;MA Rubing;YUAN Yidan(China Nuclear Power Engineering,Co.,Ltd.,Beijing 100840,China)

机构地区：[1]中国核电工程有限公司,北京100840

出　　处：《现代信息科技》2023年第9期149-153,共5页Modern Information Technology

基　　金：国家重点研发计划(2019YFB1900700)。

摘　　要：为了更好地认识严重事故下的氢气燃烧计算模型,该研究从核电厂严重事故下的氢气燃烧现象学出发,对氢气燃烧涉及到的各个机理模型进行分析,从气体可燃性判断、快燃计算和燃爆判断及处理等方面研究了氢气燃烧过程中的各项因素的影响和主要计算方法,总结了严重事故氢气燃烧模型的建模思路和重点,并比较了MAAP、MELCOR和ASTEC三种主流严重事故一体化分析软件对氢气燃烧模型计算的特点。总体来说,ASTEC对机理模型的分析最为精细,计算最为复杂;MELCOR直接使用实验关系式,模型最为简单;MAAP介于两者之间。另外目前严重事故分析程序中对氢气燃烧相关模型的实验验证缺失较多,未来可在这方面开展进一步的研究。In order to better comprehend the hydrogen combustion model in severe accident,from hydrogen combustion phenomenology in nuclear power plant severe accident,this paper analyzes various mechanism models involved in hydrogen combustion,researches the influence and main calculation methods of each factors in hydrogen combustion process from aspects of gasflammability determination,fast deflagration calculation and detonation distinction and treatment,and summarizes the modeling pathway and keynotes of hydrogen combustion model in severe accident.The characteristics of hydrogen combustion model calculated by three major severe accident integrated analysis software of MAAP,MELCOR and ASTEC are compared.In general,ASTEC provides the most detailed analysis of mechanism models and the most complex calculation.MELCOR directly uses experiment correlations,so the models are the simplest.MAAP is somewhere in between.In addition,current experiment validations for hydrogen combustion related models in severe accident analysis programs are much deficient,thus further research can be promoted in the future.

关 键 词：严重事故 氢气燃烧 可燃性极限 快燃计算 MAAP MELCOR ASTEC 

分 类 号：TP39[自动化与计算机技术—计算机应用技术] TL364[自动化与计算机技术—计算机科学与技术]