钠冷快增殖堆钠雾火分析计算

Analysis and Assessment of Sodium Spray Fire in LMFBRs

在钠冷快增殖堆假想事故中 ,由于管道破裂 ,钠喷出到有氧的房间引起钠雾火 ,导致房间内温度及压力的上升。在NACOM单个液滴燃烧模型的基础上 ,考虑燃烧钠液滴的运动以及由于钠液滴与气体的热平衡关系 ,并忽略由于液滴间的相互作用影响 ,编制程序SPCOM。对钠雾火过程中涉及的液滴运动、液滴燃烧、喷雾燃烧以及质量热量传递问题进行了模拟。计算了钠雾火引起的房间的温度及压力瞬变 ,并与实验进行了比较 。

In the postulated accidents in the LMFBRs,the sodium injects into the reactor room with oxygen due to the rupture of the pipe,which will result in sodium spray fire then make the temperature and pressure increase in the room.On the basis of the single droplet combustion model of the NACOM,a SPCOM program was developed which took account of the motion of the combustion droplet,the equivalence between the sodium droplet and gas,and neglect of the interaction of the droplets.The droplet motion,the droplet combustion,the spray combustion and the mass and heat transfer involved in the sodium spray fire were modeled.The temperature and pressure of the room were calculated and compared with the experiment results favorably.