期刊论文

Zhou, Qingzhi

中文

原子能科学技术

1000-6931

2022

56

9

1975-1986

10.7538/yzk.2021.youxian.0723

1187051041:国家自然科学基金 CX20210944:湖南省研究生科研创新项目 PC20K01:湖南省省级拨款科研课题

本校为第一机构

220Rn子体源箱是220Rn室可靠调控的重要组成部分,对其进行优化设计是建立高水平220Rn室的关键技术之一。本文在南华大学现有220Rn子体源箱和前期研究的基础上,采用计算流体力学方法建立了220Rn子体源箱数值模型,分析了入口流率、箱体轴向长度和换气率等对220Rn子体源箱性能的影响,进行了性能模拟结果与实验对比,最后开展了源箱的优化分析。结果表明:模拟和实验所获得的规律一致,模拟结果与实验结果相对误差保持在11%以内;增大入口流率能有效改善源箱220Rn子体的均匀性和稳定性,并增大源箱子体气溶胶的输出能力;当轴向长度一定时,入口流率均从1 L/min增加至10 L/min后,220Rn子体气溶胶浓度达稳定...

The aging chamber is an important part of the reliable control of the 220Rn chamber, and its optimized design is one of the key technologies to establish a high-level 220Rn chamber. Based on the existing the aging chamber of University of South China and previous studies, this paper uses computational fluid dynamics to establish the aging chamber numerical model, and analyzes the effect of the inlet flow rate, the axial length of the aging chamber and the air exchange rate on the performance of the aging chamber. The performance simulation resu...