基于OpenFOAM的5×5棒束流动数值模拟  

Numerical Simulation of 5×5 Rod Bundle Flow Based on OpenFOAM

作　　者：黄瑀琦 蔡杰进[1] HUANG Yuqi;CAI Jiejin(School of Electric Power,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学电力学院,广东广州510640

出　　处：《原子能科学技术》2021年第7期1304-1308,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金(11675057);广东省自然科学基金(2020A1515010373)。

摘　　要：为验证OpenFOAM燃料组件子通道单相棒束流动的有效性,利用在OpenFOAM中实现的SST k-ω模型对MATIS-H基准题进行了模拟。基于OpenFOAM求解子通道速度场和压力场。将OpenFOAM的模拟数据与MATIS-H基准试验的数据进行了对比。结果表明,在网格划分精度为3级时,OpenFOAM模拟CFD子通道单相流动数据与MATIS-H基准题数据吻合度较好。由于格架和搅混翼的存在,冷却剂向中心流道靠拢,高低压区分布明显,趋于中心对称。子通道内产生涡旋,加强了燃料棒表面换热。OpenFOAM在子通道CFD模拟上具有应用前景。In order to verify the effectiveness of the single-phase rod bundle flow in the fuel assembly sub-channel of OpenFOAM,the SST k-ωmodel was used to simulate the MATIS-H benchmark.The velocity and pressure were solved based on OpenFOAM.The simulation data of OpenFOAM were compared with the data of the MATIS-H benchmark.The results show that the OpenFOAM data are consistent with the MATIS-H benchmark data with a Level 3 mesh.Due to the existence of grid and mixing vanes,the coolant moves closer to the central channel and the distribution of the high and low pressure areas are obvious.A vortex is generated in the sub-channel which enhances the heat transfer on the surface of fuel rod.OpenFOAM has prospects in sub-channel CFD simulation applications.

关 键 词：OPENFOAM MATIS-H基准题 单相流动 数值模拟 

分 类 号：TL334[核科学技术—核技术及应用]