单隔间内氢气流动分布特性数值模拟与实验验证

戚雄飞; 侯丽强; 杜政瑀; 曹学武

doi:10.11884/HPLPB202032.190420

单隔间内氢气流动分布特性数值模拟与实验验证

doi: 10.11884/HPLPB202032.190420

1.
上海交通大学机械与动力工程学院，上海 200240
2.
中国核动力研究设计院，成都 610041

基金项目: 国家自然科学基金项目（11675104），国家科技重大专项（2015ZX06004003-002）

详细信息

作者简介:
戚雄飞（1993—），男，硕士研究生，从事反应堆严重事故研究，qixiongfei@sjtu.edu.cn

通讯作者:
曹学武（1962—），男，教授，从事反应堆安全研究，caoxuewu@sjtu.edu.cn

中图分类号: TL364
计量
- 文章访问数: 1536
- HTML全文浏览量: 491
- PDF下载量: 30
- 被引次数: 0
出版历程
- 收稿日期: 2019-11-01
- 修回日期: 2019-12-31
- 刊出日期: 2020-02-10

Numerical simulation and experimental verification on distribution characteristics of hydrogen flow in single compartment

1.
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2.
Nuclear Power Institute of China, Chengdu 610041, China

摘要

摘要:
以局部隔间氢气流动分布特性研究实验装置中的单个隔间作为几何结构，建立小空间内氢气分布数值研究的计算流体动力学分析模型，对不同湍流模型适用性展开讨论分析，通过对比实验数据和模拟数据，给出最优湍流模型的选择，进一步对低质量流量工况下氢气在小空间内的流动分布进行数值模拟。模拟结果表明：在选取的6种两方程湍流模型中，采用Realizable k-ε、RNG k-ε、Standard k-ε湍流模型计算得到的结果与实验值吻合较好，能够准确地反映氢气在小空间内的释放过程和分布情况；低质量流量工况下，氢气主流区域径向范围较小，氢气在容器中上部呈稳定均匀分布。
- 单隔间 /
- 氢气 /
- 湍流模型 /
- 数值模拟 /
- 流动分布
Abstract:
The distribution characteristics of hydrogen flow in local single space is a special concern of nuclear power plant and hydrogen storage device. In this paper, a single compartment of the experimental device is used as a geometric structure to establish a computational fluid dynamics analysis model for the numerical study of hydrogen distribution in small-scale space. By comparing the experimental data with the simulated data, the choice of the optimal turbulence model is given, and the flow distribution of hydrogen in small-scale space under low mass flow rate condition is simulated. The numerical simulation results obtained by Realizable k-ε, RNG k-ε and Standard k-ε turbulence models in the six two-equation turbulence models agree well with the experimental data, which can accurately reflect the release process and distribution of hydrogen in small-scale space. In low mass flow rate case, the radial range of the mainstream region of hydrogen is small, and hydrogen is stably and evenly distributed in the middle and upper part of the compartment.
- single compartment /
- hydrogen /
- turbulence model /
- numerical simulation /
- flow distribution

HTML全文

图 1 装置截面及测点分布图

Figure 1. Geometric cross section and distribution of monitoring points

下载: 全尺寸图片幻灯片

图 2 三种网格计算结果对比

Figure 2. Comparison of three grids’ calculation results

下载: 全尺寸图片幻灯片

图 3 氢气质量流量

Figure 3. Mass flow rate of hydrogen

下载: 全尺寸图片幻灯片

图 4 不同湍流模型计算所得氢气浓度与实验数据对比

Figure 4. Comparison between hydrogen concentration calculated by different turbulence models and experiment data

下载: 全尺寸图片幻灯片

图 5 各列监测点氢气浓度实验数据与模拟数据对比

Figure 5. Comparison of experimental data and simulated data of hydrogen concentration in each column of monitoring points

下载: 全尺寸图片幻灯片

表 1 三种网格划分参数

Table 1. Meshing parameters of three kinds of grids

grid	nodes	cells	maximum skewness
coarse grid	78 997	14 692	0.401
middle grid	264 642	65 230	0.414
fine grid	522 207	132 104	0.413

下载: 导出CSV

参考文献(14)

[1]	Dimmelmeier H, Jürgen E, Movahed M A. Computational validation of the EPR combustible gas control system[J]. Nuclear Engineering and Design, 2012, 249: 118-124. doi: 10.1016/j.nucengdes.2011.08.053
[2]	Deng Jian, Cao Xuewu. A study on implementing a passive autocatalytic recombiner PAR-system in the large-dry containment[J]. Nuclear Engineering and Design, 2008, 238(7): 2554-2560.
[3]	Prasad K, Pitts W M, Yang J C. A numerical study of the release and dispersion of a buoyant gas in partially confined spaces[J]. International Journal of Hydrogen Energy, 2011, 36(8): 5200-5210. doi: 10.1016/j.ijhydene.2011.01.118
[4]	Cariteau B, Brinster J, Tkatschenko I. Experiments on the distribution of concentration due to buoyant gas low flow rate release in an enclosure[J]. International Journal of Hydrogen Energy, 2011, 36(3): 2505-2512. doi: 10.1016/j.ijhydene.2010.04.054
[5]	Cariteau B, Tkatschenko I. Experimental study of the effects of vent geometry on the dispersion of a buoyant gas in a small enclosure[J]. International Journal of Hydrogen Energy, 2013, 38(19): 8030-8038. doi: 10.1016/j.ijhydene.2013.03.100
[6]	Xiao Jianjun, Travis J R. How critical is turbulence modeling in gas distribution simulations of large-scale complex nuclear reactor containment?[J]. Annals of Nuclear Energy, 2013, 56: 227-242. doi: 10.1016/j.anucene.2013.01.016
[7]	Müller C, Hughes E D, Niederauer G F, et al. GASFLOW: A computational fluid dynamics code for gases, aerosols, and combustion, volume 3: Assessment manual[J]. Office of Scientific & Technical Information Technical Reports, 1998.
[8]	Wilkening H, Baraldi D, Heitsch M. CFD simulations of light gas release and mixing in the Battelle Model-Containment with CFX[J]. Nuclear Engineering and Design, 2008, 238(3): 618-626. doi: 10.1016/j.nucengdes.2007.02.042
[9]	Peng Cheng, Tong Lili, Cao Xuewu. Numerical analysis on hydrogen stratification and post-inerting of hydrogen risk[J]. Annals of Nuclear Energy, 2016, 94: 451-460. doi: 10.1016/j.anucene.2016.04.029
[10]	Swain M R, Shriber J, Swain M N. Comparison of hydrogen, natural gas, liquified petroleum gas, and gasoline leakage in a residential garage[J]. Energy & fuels, 1998, 12(1): 83-89.
[11]	Agranat V, Cheng Z, Tchouvelev A. CFD modeling of hydrogen releases and dispersion in hydrogen energy station[C]//Proceedings of the 15th World Hydrogen Energy Conference. 2004.
[12]	Sonnenkalb M, Poss G. The international test programme in the THAI facility and its use for code validation[C]//EUROSAFWE Forum. 2009.
[13]	Schefer R W, Houf W G, Williams T C. Investigation of small-scale unintended releases of hydrogen: Buoyancy effects[J]. International Journal of Hydrogen Energy, 2008, 33(17): 4702-4712. doi: 10.1016/j.ijhydene.2008.05.091
[14]	Houf W, Schefer R. Analytical and experimental investigation of small-scale unintended releases of hydrogen[J]. International Journal of Hydrogen Energy, 2008, 33(4): 1435-1444. doi: 10.1016/j.ijhydene.2007.11.031