基于CFD方法的核设施气载流出物取样代表性研究

辐射防护 ›› 2018, Vol. 38 ›› Issue (6): 471-478.

基于CFD方法的核设施气载流出物取样代表性研究

王勰, 任忠国, 熊忠华

中国工程物理研究院材料研究所,四川江油 621907

收稿日期:2017-08-12 出版日期:2018-11-20 发布日期:2020-07-21
通讯作者: 熊忠华。E-mail:xiongzhonghua@caep.cn
作者简介:王勰(1992—),男,2014年毕业于西安交通大学,现为中国工程物理研究院辐射防护与环境保护专业在读硕士研究生。E-mail:799811042@qq.com
基金资助:
全国核基地与核设施辐射环境现状调查与评价项目资助。

Application of computational fluid dynamics method in the analysis of representative aerosol sampling in the pipeline of nuclearfacility

WANG Xie, REN Zhongguo, XIONG Zhonghua

Insititute of Materials, China Academy of Engineering Physics, Sichuan Jiangyou 621907

Received:2017-08-12 Online:2018-11-20 Published:2020-07-21

摘要/Abstract

摘要： 核设施气载流出物取样代表性的优劣,决定着对环境监测和辐射安全评价的准确性。应用计算流体力学(Computational Fluid Dynamics,CFD)方法,根据新版ISO 2889标准《核设施的烟道和通风管道中的放射性物质取样》中对取样位置的要求,对某核设施排气系统的流场进行了数值模拟并分析了不同取样位置的取样代表性。指出现有取样位置选取不尽合理的结论,通过对模拟结果进行分析,确定了合理取样位置,从而可以有效地监测放射性气载流出物的核素活度浓度,为辐射环境影响评价提供科学数据支持。

关键词: 计算流体力学, 取样位置, 气载流出物, 取样代表性

Abstract: The representative sampling of radioactive gases and aerosols determines the accuracy of environmental monitoring and evaluation results of nuclear facilities. The gas pipeline flow field was simulated with CFD (Computational Fluid Dynamics,CFD).The results were compared with the requirements in ISO 2889. It shows the current sampling position does not meet the requirements described in ISO 2889. The proper positions which can facilitate effetive monitoring of radioactive effluents and provide scientific data support to environment evaluation are recommended.

Key words: computational fluid dynamics, sampling position, airborne effluent, sampling representation

中图分类号:

TL75+1

王勰, 任忠国, 熊忠华. 基于CFD方法的核设施气载流出物取样代表性研究[J]. 辐射防护, 2018, 38(6): 471-478.

WANG Xie, REN Zhongguo, XIONG Zhonghua. Application of computational fluid dynamics method in the analysis of representative aerosol sampling in the pipeline of nuclearfacility[J]. RADIATION PROTECTION, 2018, 38(6): 471-478.

参考文献

[1] 王平, 许光, 丁世海, 等. 核设施气载放射性流出物取样新标准的分析与应用[J]. 核电子学与探测技术, 2012, 32(4): 390-395.
WANG Ping, XU Guang, DING Shihai, et al. Analysis and implement of new standard on airborne effluent sampling of nuclear facilities[J]. Nuclear Electronics & Detetion Technology, 2012, 32(4): 390-395.
[2] 蒋婧, 何玮, 徐春艳,等. 核设施烟囱气态流出物取样代表性验证的技术要求研究[J]. 辐射防护, 2016, 36(6):350-357.
JIANG Jing, HE Wei, XU Chunyan, et al. Study on qualification methods and technologies of sampling representativeness of airborne effluent from the stacks of nuclear facilities[J]. Radiation Protection, 2016, 36(6):350-357.
[3] 卢正永, 张志龙, 傅翠明. 核设施气载放射性排放物的取样和监测——ISO 2889: 2010 标准简介[C]. 2010第五届绿色财富 (中国) 论坛会刊, 2010:499-519.
[4] Andrew R, McFarland,John C, et al. Single-point representative sampling with shrouded probes[R].Texas: Los Alamos National Laboratory,1993.
[5] Glissmeyer J A, Flaherty J E, Piepel G F. Assessment of the group 5-6 (LB C2, LB S2, LV S1) stack sampling probe locations for compliance with ANSI/HPS N13.1 1999[R]. Office of Scientific & Technical Information Technical Reports, 2013.
[6] Glissmeyer J A. Assessment of the 296-S-21 stack sampling probe location[R]. Office of Scientific & Technical Information Technical Reports, 2006.
[7] ISO. Sampling airborne radioactive materials from the stacks and ducts of nuclear facilities:ISO 2889—2010 [S]. 2010.
[8] Pdf G. Numerical modeling of sampling airborne radioactive particles methods from the stacks of nuclear facilities in compliance with ISO 2889[R]. 2013.
[9] 丁世海, 许光, 尹振羽, 等. 应用计算流体动力学分析烟囱气载流出物取样的混合均匀性[J]. 核电子学与探测技术, 2012, 32(3): 260-264.
DING Shihai, XU Guang, YIN Zhenyu, et al. Computational Fluid Dynamics(CFD) analysis of stack effluent sampling mixing uniformity[J]. Nuclear Electronics & Detetion Technology, 2012, 32(3): 260-264.
[10] 王福军. 计算流体动力学分析: CFD 软件原理与应用[M]. 北京:清华大学出版社有限公司, 2004.
[11] 陈小明. 空调室内生物气溶胶扩散分布的数值模拟[D]. 衡阳:南华大学, 2011.
CHEN Xiaoming. Numerical simulation of diffusion of biologics in air-conditioned room[D]. University of South China, 2011.
[12] ZHAO B, ZHANG Y, LI X, et al. Comparison of indoor aerosol particle concentration and deposition in different ventilated rooms by numerical method[J]. Building and Environment, 2004, 39(1):1-8.
[13] 于水. 放射性气溶胶粒度的测定及ICRP 假定值的代表性[J]. 辐射防护通讯, 1997, 17(5): 18-23.
[14] Recknagle K P, Yokuda S T, Ballinger M Y, et al. Scaled tests and modeling of effluent stack sampling location mixing[J]. Health physics, 2009, 96(2): 164-173.
[15] Anand M, McFarland A R, Rajagopal K R. Gas mixing for achieving suitable conditions for single point aerosol sampling in a straight tube: experimental and numerical results[J]. Health Physics, 2003, 84(1): 82-91.
[16] McFarland A R, Gupta R, Anand N K. Suitability of air sampling locations downstream of bends and static mixing elements[J]. Health Physics, 1999, 77(6): 703-712.