局部空间内氢气爆炸程序开发及应用  

Development and Application of Analysis Code for Hydrogen Detonation in Local Space

作　　者：黄涛[1] 毛辉辉[2] 张亚培[1] 苏光辉[1] 秋穗正[1] 

机构地区：[1]西安交通大学核科学与技术学院,陕西西安710049 [2]中国核动力研究设计院核反应堆系统设计技术重点实验室,四川成都610213

出　　处：《原子能科学技术》2016年第4期671-677,共7页Atomic Energy Science and Technology

基　　金：中国核动力研究设计院核反应堆系统设计技术重点实验室项目资助(2015002);先进反应堆工程与安全教育部重点实验室开放基金资助项目(ARES201403)

摘　　要：针对反应堆安全壳或厂房局部空间内氢气爆炸过程,利用Fortran 90语言开发了氢气爆炸数值分析程序。采用单步反应模拟氢气与空气的化学反应,采用5阶精度的WENO求解对流项,时间步进采用3阶精度的龙格-库塔方法,对局部二维空间内氢气/空气/水蒸气预混气的爆炸过程进行了数值模拟。采用开发的程序计算了两种典型的激波管问题以验证程序的准确性,并用该程序分析了带隔间的沸水反应堆厂房局部空间内的氢气爆炸过程。计算结果表明:爆炸过程中最大的压力峰值来源于冲击波与反射波之间的碰撞,最大的冲击波压力和温度高达7.5 MPa和3 245K。由此可得,安全壳内的氢气爆炸过程可能会威胁到安全壳的完整性,导致放射性物质释放。The numerical analysis code for the hydrogen detonation in reactor containment or a local space in reactor building was developed using Fortran 90 language.The global-chemistry model was adopted to simulate the chemical reaction between hydrogen and air.The third-order Runge-Kutta method and the fifth-order weighted essentially non-oscillatory（WENO）scheme were adopted to hand the time-dependent term and the convection flux respectively,and the explosion of pre-mixed gas of hydrogen/air/steam in local 2-D space was simulated.The computer code was verified by comparison of predicted results and exact solutions of two cases of shock tube problems.Furthermore,this code was applied to the hydrogen detonation analysis in the compartment of BWR（boiling water reactor）building.The results show that the maximum pressure and tem-perature during detonation are 7.5 MPa and 3 245 K,which are caused by collisions of shock waves.It can be inferred that the hydrogen detonation may threaten containment integrity,causing the release of radioactivity.

关 键 词：严重事故 局部空间 氢气爆炸 数值模拟 

分 类 号：TL364[核科学技术—核技术及应用]