CFD evaluation of turbulence model on heat transfer in 5×5 rod bundles

被引：0
作者：
Chao, Yan-Meng [1 ]
Yang, Li-Xin [1 ]
Zhang, Yu-Xiang [2 ]
Pang, Zheng-Zheng [2 ]
机构：
[1] School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing
[2] China Nuclear Power Technology Research Institute, Shenzhen
来源：
Yuanzineng Kexue Jishu/Atomic Energy Science and Technology | 2014年 / 48卷 / 10期
关键词：
CFD; Spacer grid; Thermal-hydraulic; Turbulence model;
D O I：
10.7538/yzk.2014.48.10.1782
中图分类号：
学科分类号：
摘要：
Different turbulence models may lead to different results when analyzing fuel assemblies using computational fluid dynamics (CFD) method. In this paper, a 5×5 rod bundle model was built to analyze the relationship between flow and heat transfer. The pressure drop and Nu were calculated using ANSYS CFX. Three factors evaluating swirling flow and cross-flow were used to analyze the inner relationship between flow field and heat transfer. The performances of various turbulence models, including eddy viscosity model and Reynold stress model, were evaluated. The comparison between numerical and similar experimental results indicates that Reynold stress model is more appropriate for modeling flow features and heat transfer in spacer grids discussed in this paper. ©, 2014, Yuanzineng Kexue Jishu/Atomic Energy Science and Technology. All right reserved.
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页码：1782 / 1789
页数：7
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