原子能科学技术Issue(5)：827-835,9.DOI:10.7538/yzk.2014.48.05.0827
燃料组件5×5格架多跨模型 CFD 模拟方法研究
CFD Simulation Study on 5 × 5 Multi-span Spacer Grids of Fuel Assembly
晁嫣萌 1杨立新 1庞铮铮 2张玉相2
作者信息
- 1. 北京交通大学 机械与电子控制工程学院，北京 100044
- 2. 中科华核电技术研究院有限公司，广东 深圳 518026
- 折叠
摘要
Abstract
The simplification of geometry ,the generation of grid and the method of post processing of 5 × 5 rod bundles in a typical fuel assembly were discussed in detail .The influence of spring and arches on pressure drop and mixing characteristics was simulated using 5 × 5 rod bundles with one span model and the interaction between multiple grids was calculated using 11-span 5 × 5 rod bundles without spring and arches .The simula-tion results indicate that spring and arches may enhance lateral flow and heat transfer with the increase of Nu 8% .However ,the pressure drop caused by spring and arches is 40% larger than that of the simplified model without spring and arches .Flow features and heat transfer characteristics across grids were obtained using the 5 × 5 multi-span model w hich can be used as CFD analysis reference of thermal-hydraulic characteristics in the fuel assembly design development and prediction of DNB .关键词
格架/搅混翼/C FD/弹簧刚突/热工水力Key words
spacer grid/mixing vane/CFD/spring and arch/thermal-hydraulic分类
能源科技引用本文复制引用
晁嫣萌,杨立新,庞铮铮,张玉相..燃料组件5×5格架多跨模型 CFD 模拟方法研究[J].原子能科学技术,2014,(5):827-835,9.
