COMPUTATIONAL FLUID DYNAMIC SIMULATION OF SWIRL FLOW IN HEXAGONAL ROD BUNDLE GEOMETRY BY SPLIT MIXING VANE GRID SPACERS
作者: Mohammad Nazififard
刊名: Thermal Science, 2019, Vol.23 (5 2019), pp.3143-3152
来源数据库: Society for Thermal Engineers of Serbia
DOI: https://doi.org/10.2298/TSCI171006076N
关键词: Pressurised water reactorVVER 1000Mixing vaneHeat Transfer EnhancementComputational fluid dynamicsTurbulence model
原始语种摘要: Heat transfer and pressure drop are numerically investigated for turbulent flows through a hexagonal fuel rod bundle. For the purpose of numerical analysis, the geometric and boundary conditions were taken from the VVER-1000. Since VVER-1000 does not have mixing vane on the grid spacer of the fuel assembly, split mixing vane is designed to boost turbulent flow and heat transfer in the rod bundle subchannels. The computational domain including two grid spacers extend from 100 × Dh upstream of the first grid spacer to 250 × Dh downstream of the second grid spacer. The steady-state form of the RANS, mass, energy and turbulence equations was discretized and solved using ANSYS-CFX. The standard k-ε model is employed to simulate turbulence. The results show a considerable increase in the...
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关键词翻译
关键词翻译
  • spacer 垫片
  • mixing 混合
  • Transfer 转运牌汽车
  • numerically 数字上
  • assembly 组装
  • reactor 反应器
  • computational 计算的
  • transfer 转换
  • geometric 凡何
  • simulate 模拟