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。
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-εand Standard k-εturbulence 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.
作者
戚雄飞
侯丽强
杜政瑀
曹学武
Qi Xiongfei;Hou Liqiang;Du Zhengyu;Cao Xuewu(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Nuclear Power Institute of China,Chengdu 610041,China)
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2020年第5期120-125,共6页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(11675104),国家科技重大专项(2015ZX06004003-002)。
关键词
单隔间
氢气
湍流模型
数值模拟
流动分布
single compartment
hydrogen
turbulence model
numerical simulation
flow distribution
