摘要
高温气冷堆中石墨粉尘的运动规律对反应堆安全具有重要意义。本文采用数值模拟方法计算得到蒸汽发生器中的流场分布,在此基础上分析了蒸汽发生器中石墨粉尘重悬浮的规律。结果表明,对于粒径为0.1μm的石墨粉尘,粉尘的重悬浮率几乎为0,对于粒径为1μm以上的石墨粉尘,随着氦气流速的增大,蒸汽发生器中石墨粉尘的重悬浮率增大;在相同氦气流速下,随着石墨粉尘粒径的增大,石墨粉尘重悬浮率增大。
Graphite dust has an important effect on the safety analysis of high-tempera- ture gas-cooled reactor （HTR）. The flow field in steam generator was studied using computational fluid dynamics （CFD） method, and the resuspension of graphite dust in steam generator was analysed. The results show that the resuspension fraction is nearly zero for the particles with the diameter of 0.1 μm, while it increases as the helium veloc- ity in steam generator increases for the particles with the diameter larger than 1 μm. The results also indicate that the resuspension fraction would increase as the diameter of the graphite dust increases at a given helium velocity.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2013年第9期1560-1564,共5页
Atomic Energy Science and Technology
基金
高等学校博士学科点专项科研基金(新教师类)资助项目(20120002120010)
自主科研计划课题资助项目(20111080959)
高温气冷堆核电站国家科技重大专项资助项目(2008ZX06901-001)
关键词
石墨粉尘
高温气冷堆
蒸汽发生器
重悬浮
graphite dust high-temperature gas-cooled reactor steam generatorresuspension
