| 稠密栅元棒束内流动行为的CFD数值模拟 |
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| 引用本文： | 于意奇,顾汉洋,杨燕华,程旭,王小军.稠密栅元棒束内流动行为的CFD数值模拟[J].核动力工程,2009,30(2). |
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| 作者姓名： | 于意奇 顾汉洋 杨燕华 程旭 王小军 |
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| 作者单位： | 1. 上海交通大学核科学与工程学院,上海,200240
2. 中国核动力研究设计院空泡物理和自然循环重点实验室,成都,610041 |
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| 基金项目： | 空泡物理和自然循环重点实验室基金，国家重点基础研究发展规划(973计划) |
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| 摘 要： | 国内针对稠密栅元组件内流体的流动和传热特征展了大量的实验研究,但目前仍缺乏对稠密栅元通道内冷却剂流动特性的全面认识.本文对矩形和三角形稠密栅元通道内的空气湍流流动进行了数值研究.结合实验数据,系统地验证了涡粘性和雷诺应力两类湍流模型模拟稠密栅元内流动特征的适用范围.结果表明:SSG雷诺应力模型对流动有较好的模拟,但在棒壁窄缝处的计算结果与实验数据存在较大的差距;在y+<20时,SSG模型对近壁面区域网格的疏密不敏感;在y+较小时,二阶ω模型出现数值震荡.
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| 关 键 词： | 稠密栅元 通道 流动特征 数值模拟 湍流模型 网格结构 |
Flow Behavior Analysis in Tight Lattice Rod Bundle Using CFD Method |
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| YU Yiqi,GU Han-yang,YANG Yan-hua,CHENG Xu,WANG Xiao-jun.Flow Behavior Analysis in Tight Lattice Rod Bundle Using CFD Method[J].Nuclear Power Engineering,2009,30(2). |
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| Authors: | YU Yiqi GU Han-yang YANG Yan-hua CHENG Xu WANG Xiao-jun |
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| Affiliation: | 1.School of Nuclear science and Engineering;Shanghai Jiaotong University;Shanghai;200240;China;2.National Key Laboratory of Bubble Physics and Natural Circulation;Nuclear Power Institute of China;Chengdu;610041;China |
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| Abstract: | Tight lattice rod bundles have been applied to reactors due to lts high conversion ratio.How-ever,there still exists big deficiency in understanding of the coolant flow characteristics inside the sub-channels of tight lattices.This paper investigates the turbulence air flow behavior inside both square and triangular tight lattice.The validity of both eddy viscosity models and Reynolds stress models is assessed by comparing computational results with experimental data.The results show a reasonable prediction... |
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| Keywords: | Tight lattice Channels Flow characteristics Number simulate Onflow model Mesh struc-ture |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
