【作者】 孙雪霆； 季松涛； 刘振华； 张应超；

【Author】 SUN Xue-ting,JI Song-tao,LIU Zhen-hua,ZHANG Ying-chao (China Institute of Atomic Energy,Beijing 102413,China)

【机构】 中国原子能科学研究院；

【摘要】 使用CONTAIN程序计算了核燃料循环临界事故发生时气溶胶的迁移、沉积等行为。结果表明:控制体连通与否以及水蒸气的存在与否会对气空间的气溶胶浓度、粒度分布及沉积等情况产生不同程度的影响。干燥情况下的控制体连通对气溶胶扩散影响并不明显,而水蒸气能够显著促进气溶胶的沉积和扩散。更多还原

【Abstract】 The transport and deposition of aerosols in nuclear fuel cycle criticality accident were analyzed utilizing CONTAIN code.The results show that the airborne aerosol concentration,the size distribution and the deposition processes are affected by the connectivity of cells and the existence of steam by different grades.Aerosol diffusion between cells is not obvious under dry conditions,while steam notably encourages the effects of deposition and diffusion of aerosols.更多还原