NUMERICAL ANALYSIS OF FORCED CONVECTION HEAT TRANSFER FROM TWO TANDEM CIRCULAR CYLINDERS EMBEDDED IN A POROUS MEDIUM
作者: Habib-Ollah SAYEHVAND Ehsan KHALILI DEHKORDI and Amir BASIRI PARSA
刊名: Thermal Science, 2017, Vol.21 (5), pp.2117-2128
来源数据库: Society for Thermal Engineers of Serbia
DOI: https://doi.org/10.2298/TSCI150307081S
关键词: porous mediumpacked bedforced convectionlaminar flowtwo tandem cylinders
原始语种摘要: Study the heat and mass transfer in packed bed heat exchangers particularly in nuclear application is subject of many new researches. In this paper numerical analysis of forced convection heat transfer from two tandem circular cylinders embedded in a packed bed, which is made of spherical aluminum particles, is investigated in laminar flow. The porous medium increases the overall heat absorbed from two cylinders and cooling effect but increases the pressure drop, significantly. Also, the effect of increase the horizontal distance between two tandem circular cylinders on flow pattern and heat transfer is investigated. For the empty channel, the total wall heat flux in very small distances have a minimum due to generation of closed vortex region and for longer distances, by increases the...
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关键词翻译
关键词翻译
  • cylinders 汽缸
  • circular 循环的
  • embedded 嵌入
  • pattern 模型
  • quantity 
  • empty 空缺的
  • gradient 倾斜度
  • convection 对流
  • horizontal 水平线
  • tandem 串联机